diff --git a/README.md b/README.md
index bd421eb..5ae936a 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
 If you don't have YunoHost, please see [here](https://yunohost.org/#/install) to know how to install and enjoy it.*
 
 ## Overview
-Mastodon is a free, open-source social network. A decentralized alternative to commercial platforms, it avoids the risks of a single company monopolizing your communication. Pick a server that you trust — whichever you choose, you can interact with everyone else. Anyone can run their own Mastodon instance and participate in the social network seamlessly.
+Mastodon is a free, open-source social network. A decentralized alternative to commercial platforms, it avoids the risks of a single company monopolizing your communication. 
 
 **Shipped version:** 3.1.2
 
diff --git a/README_fr.md b/README_fr.md
index ea8fc4f..684d762 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -9,7 +9,7 @@
 Si vous n'avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) pour savoir comment l'installer et en profiter.*
 
 ## Vue d'ensemble
-Mastodon est un réseau social gratuit et open source. Une alternative décentralisée aux plates-formes commerciales, elle évite les risques d'une seule société qui monopolise votre communication. Choisissez un serveur sur lequel vous faites confiance - selon votre choix, vous pouvez interagir avec tous les autres. N'importe qui peut exécuter sa propre instance de Mastodon et participer au réseau social de façon transparente.
+Mastodon est un réseau social gratuit et open source. Une alternative décentralisée aux plates-formes commerciales, elle évite les risques d'une seule société qui monopolise votre communication.
 
 **Version incluse:** 3.1.2
 
diff --git a/check_process b/check_process
index f5e4602..6050dcd 100644
--- a/check_process
+++ b/check_process
@@ -2,8 +2,9 @@
 	auto_remove=1
 	; Manifest
 		domain="domain.tld"	(DOMAIN)
-		admin="john"   (USER)
-	    language="fr_FR"
+		admin="john"	(USER)
+		language="fr_FR"
+		is_public=1	(PUBLIC|public=1|private=0)
 	; Checks
 		pkg_linter=1
 		setup_sub_dir=0
@@ -14,6 +15,8 @@
 		upgrade=1
 		# 3.1.2~ynh2
 		upgrade=1	from_commit=7e1f4c2dee5f2c8374686aea62f4648cdf2722c3
+		# 3.1.2~ynh3
+		upgrade=1	from_commit=6b30109fc986d83166b1805ec3ad7e28200e3743
 		backup_restore=1
 		multi_instance=1
 		# This test is no longer necessary since the version 2.7 (PR: https://github.com/YunoHost/yunohost/pull/304), you can still do it if your app could be installed with this version.
@@ -26,3 +29,8 @@
 ;;; Options
 Email=yalh@yahoo.com
 Notification=all
+;;; Upgrade options
+	; commit=7e1f4c2dee5f2c8374686aea62f4648cdf2722c3
+		name=3.1.2~ynh2
+	; commit=6b30109fc986d83166b1805ec3ad7e28200e3743
+		name=3.1.2~ynh3
diff --git a/conf/cron b/conf/cron
index 9a984a3..776808b 100644
--- a/conf/cron
+++ b/conf/cron
@@ -1,2 +1,5 @@
-RAILS_ENV=production
-@daily cd __FINAL__PATH__/live && /opt/rbenv/versions/2.6.5/bin/bundle exec rake __USER__:media:remove_remote
+@daily cd __FINAL_PATH__/live && RAILS_ENV=production bin/tootctl media remove
+@monthly cd __FINAL_PATH__/live && RAILS_ENV=production bin/tootctl media remove-orphans
+@monthly cd __FINAL_PATH__/live && RAILS_ENV=production bin/tootctl accounts cull
+@monthly cd __FINAL_PATH__/live && RAILS_ENV=production bin/tootctl statuses remove
+@monthly cd __FINAL_PATH__/live && RAILS_ENV=production bin/tootctl preview_cards remove
diff --git a/conf/mastodon-sidekiq.service b/conf/mastodon-sidekiq.service
index d5fc7e1..a4fc0da 100644
--- a/conf/mastodon-sidekiq.service
+++ b/conf/mastodon-sidekiq.service
@@ -9,7 +9,7 @@
  Environment="RAILS_ENV=production"
  Environment="DB_POOL=25"
  Environment="MALLOC_ARENA_MAX=2"
- ExecStart=/opt/rbenv/versions/2.6.5/bin/bundle exec sidekiq -c 25
+ ExecStart=__RBENV_ROOT__/shims/bundle exec sidekiq -c 25
  TimeoutSec=15
  Restart=always
  StandardError=syslog
diff --git a/conf/mastodon-streaming.service b/conf/mastodon-streaming.service
index 2e130d5..94309c1 100644
--- a/conf/mastodon-streaming.service
+++ b/conf/mastodon-streaming.service
@@ -9,8 +9,8 @@
  Environment="NODE_ENV=production"
  Environment="PORT=__PORT_STREAM__"
  Environment="STREAMING_CLUSTER_NUM=1"
- Environment=PATH=__NODEJS_PATH__
- ExecStart=__NODEJS_PATH__/node ./streaming
+ Environment=__YNH_LOAD_NODE_PATH__
+ ExecStart=__YNH_NODE__ ./streaming
  TimeoutSec=15
  Restart=always
  StandardError=syslog
diff --git a/conf/mastodon-web.service b/conf/mastodon-web.service
index bb65afe..bb07cf4 100644
--- a/conf/mastodon-web.service
+++ b/conf/mastodon-web.service
@@ -8,7 +8,7 @@
  WorkingDirectory=__FINALPATH__/live
  Environment="RAILS_ENV=production"
  Environment="PORT=__PORT_WEB__"
- ExecStart=/opt/rbenv/versions/2.6.5/bin/bundle exec puma -C config/puma.rb
+ ExecStart=__RBENV_ROOT__/shims/bundle exec puma -C config/puma.rb
  ExecReload=/bin/kill -SIGUSR1 $MAINPID
  TimeoutSec=15
  Restart=always
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 7fa7b87..866fcc7 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -19,14 +19,14 @@ location / {
 }
 
 location ~ ^/(emoji|packs|system/accounts/avatars|system/media_attachments/files) {
-  add_header Cache-Control "public, max-age=31536000, immutable";
-  add_header Strict-Transport-Security "max-age=31536000";
+  more_set_headers "Cache-Control: public, max-age=31536000, immutable";
+  more_set_headers "Strict-Transport-Security: max-age=31536000";
   try_files $uri @proxy;
 }
 
 location /sw.js {
-  add_header Cache-Control "public, max-age=0";
-  add_header Strict-Transport-Security "max-age=31536000";
+  more_set_headers "Cache-Control: public, max-age=0";
+  more_set_headers "Strict-Transport-Security: max-age=31536000";
   try_files $uri @proxy;
 }
 
@@ -38,7 +38,7 @@ location @proxy {
   proxy_set_header Proxy "";
   proxy_pass_header Server;
 
-  proxy_pass http://127.0.0.1:3000;
+  proxy_pass http://127.0.0.1:__PORT_WEB__;
   proxy_buffering on;
   proxy_redirect off;
   proxy_http_version 1.1;
@@ -49,8 +49,8 @@ location @proxy {
   proxy_cache_valid 200 7d;
   proxy_cache_valid 410 24h;
   proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
-  add_header X-Cached $upstream_cache_status;
-  add_header Strict-Transport-Security "max-age=31536000";
+  more_set_headers "X-Cached: $upstream_cache_status";
+  more_set_headers "Strict-Transport-Security: max-age=31536000";
 
   tcp_nodelay on;
 }
@@ -62,7 +62,7 @@ location /api/v1/streaming {
   proxy_set_header X-Forwarded-Proto https;
   proxy_set_header Proxy "";
 
-  proxy_pass http://127.0.0.1:4000;
+  proxy_pass http://127.0.0.1:__PORT_STREAM__;
   proxy_buffering off;
   proxy_redirect off;
   proxy_http_version 1.1;
diff --git a/manifest.json b/manifest.json
index 5925f8f..a6dbf25 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,54 +1,54 @@
 {
-	"name": "Mastodon",
-	"id": "mastodon",
-	"packaging_format": 1,
-	"description": {
-		"en": "A libre and federated social network.",
-		"fr": "Un réseau social libre et fédéré."
-	},
-	"version": "3.1.2~ynh3",
-	"url": "https://github.com/tootsuite/mastodon",
-	"license": "AGPL-3.0-or-later",
-	"maintainer": [
-	    {
-		    "name": "cyp",
-		    "email": "cyp@rouquin.me"
-	    },
-	    {
-		    "name": "nemsia",
-		    "email": "nemsia@nemsia.org"
-	    },
-	    {
-		    "name": "yalh76"
-	    }
-	],
+    "name": "Mastodon",
+    "id": "mastodon",
+    "packaging_format": 1,
+    "description": {
+        "en": "A libre and federated social network.",
+        "fr": "Un réseau social libre et fédéré."
+    },
+    "version": "3.1.2~ynh4",
+    "url": "https://github.com/tootsuite/mastodon",
+    "license": "AGPL-3.0-or-later",
+    "maintainer": [
+        {
+            "name": "cyp",
+            "email": "cyp@rouquin.me"
+        },
+        {
+            "name": "nemsia",
+            "email": "nemsia@nemsia.org"
+        },
+        {
+            "name": "yalh76"
+        }
+    ],
     "requirements": {
-        "yunohost": ">= 3.7"
+        "yunohost": ">= 3.8.2"
     },
     "multi_instance": true,
-	"services": [
-		"nginx"
-	],
-	"arguments": {
-		"install" : [
-			{
-				"name": "domain",
-				"type": "domain",
-				"ask": {
-					"en": "Choose a domain for Mastodon",
-					"fr": "Choisissez un domaine pour Mastodon"
-				},
+    "services": [
+        "nginx"
+    ],
+    "arguments": {
+        "install" : [
+            {
+                "name": "domain",
+                "type": "domain",
+                "ask": {
+                    "en": "Choose a domain for Mastodon",
+                    "fr": "Choisissez un domaine pour Mastodon"
+                },
                 "example": "example.com"
-			},
-			{
-				"name": "admin",
-				"type": "user",
-				"ask": {
-					"en": "Choose an admin user",
-					"fr": "Choisissez l'administrateur"
-				},
+            },
+            {
+                "name": "admin",
+                "type": "user",
+                "ask": {
+                    "en": "Choose an admin user",
+                    "fr": "Choisissez l'administrateur"
+                },
                 "example": "johndoe"
-			},
+            },
             {
                 "name": "is_public",
                 "type": "boolean",
@@ -58,16 +58,16 @@
                 },
                 "default": true
             },
-			{
-				"name": "language",
+            {
+                "name": "language",
                 "type": "string",
-				"ask": {
-					"en": "Choose the application language",
-					"fr": "Choisissez la langue de l'application"
-				},
-				"choices": ["en_EN", "fr_FR"],
-				"default": "fr_FR"
-			}
-		]
-	}
+                "ask": {
+                    "en": "Choose the application language",
+                    "fr": "Choisissez la langue de l'application"
+            },
+                "choices": ["en_EN", "fr_FR"],
+                "default": "fr_FR"
+            }
+        ]
+    }
 }
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 015c1e9..2cf8424 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -7,6 +7,14 @@
 # dependencies used by the app
 pkg_dependencies="imagemagick ffmpeg libpq-dev libxml2-dev libxslt1-dev file git-core g++ libprotobuf-dev protobuf-compiler pkg-config gcc autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3|libgdbm6 libgdbm-dev redis-server redis-tools postgresql postgresql-contrib libidn11-dev libicu-dev libjemalloc-dev curl apt-transport-https"
 
+RUBY_VERSION="2.6.5"
+
+BUNDLER_VERSION="1.17.3"
+
+NODEJS_VERSION="10"
+
+MEMORY_NEEDED="2560"
+
 #=================================================
 # PERSONAL HELPERS
 #=================================================
diff --git a/scripts/backup b/scripts/backup
index 61ad5f4..c1d4f6f 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -13,7 +13,6 @@ source /usr/share/yunohost/helpers
 #=================================================
 # MANAGE SCRIPT FAILURE
 #=================================================
-ynh_script_progression --message="Managing script failure..." --weight=1
 
 ynh_clean_setup () {
 	ynh_clean_check_starting
@@ -24,7 +23,7 @@ ynh_abort_if_errors
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=2
+ynh_print_info --message="Loading installation settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
@@ -33,43 +32,27 @@ domain=$(ynh_app_setting_get --app=$app --key=domain)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 
 #=================================================
-# STANDARD BACKUP STEPS
+# DECLARE DATA AND CONF FILES TO BACKUP
 #=================================================
-# STOP SYSTEMD SERVICE
-#=================================================
-ynh_script_progression --message="Stopping a systemd service..." --weight=27
-
-ynh_systemd_action --service_name=${app}-web --action="stop" --log_path=systemd --line_match="Stopped"
-ynh_systemd_action --service_name=${app}-sidekiq --action="stop" --log_path=systemd --line_match="Stopped"
-ynh_systemd_action --service_name=${app}-streaming --action="stop" --log_path=systemd --line_match="Stopped"
+ynh_print_info --message="Declaring files to be backed up..."
 
 #=================================================
 # BACKUP THE APP MAIN DIR
 #=================================================
-ynh_script_progression --message="Backing up the main app directory..." --weight=2
 
 ynh_backup --src_path="$final_path"
 
 #=================================================
 # BACKUP THE NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Backing up nginx web server configuration..." --weight=2
 
 ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
-#=================================================
-# BACKUP THE POSTGRESQL DATABASE
-#=================================================
-ynh_script_progression --message="Backing up the PostgreSQL database..." --weight=4
-
-ynh_psql_dump_db --database="$db_name" > db.sql
-
 #=================================================
 # SPECIFIC BACKUP
 #=================================================
 # BACKUP SYSTEMD
 #=================================================
-ynh_script_progression --message="Backing up systemd configuration..." --weight=2
 
 ynh_backup --src_path="/etc/systemd/system/$app-web.service"
 ynh_backup --src_path="/etc/systemd/system/$app-sidekiq.service"
@@ -78,21 +61,18 @@ ynh_backup --src_path="/etc/systemd/system/$app-streaming.service"
 #=================================================
 # BACKUP A CRON FILE
 #=================================================
-ynh_script_progression --message="Backing up a cron file..." --weight=1
 
 ynh_backup --src_path="/etc/cron.d/$app"
 
 #=================================================
-# START SYSTEMD SERVICE
+# BACKUP THE POSTGRESQL DATABASE
 #=================================================
-ynh_script_progression --message="Starting a systemd service..." --weight=1
+ynh_print_info --message="Backing up the PostgreSQL database..."
 
-ynh_systemd_action --action=start --service_name=${app}-web --line_match="Listening on tcp" --log_path=systemd
-ynh_systemd_action --action=start --service_name=${app}-sidekiq --line_match="Starting processing" --log_path=systemd
-ynh_systemd_action --action=start --service_name=${app}-streaming --line_match="Worker 1 now listening" --log_path=systemd
+ynh_psql_dump_db --database="$db_name" > db.sql
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Backup script completed for $app. (YunoHost will then actually copy those files to the archive)." --last
+ynh_print_info --message="Backup script completed for $app. (YunoHost will then actually copy those files to the archive)."
diff --git a/scripts/install b/scripts/install
index cb059ba..53b598b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -8,16 +8,12 @@
 
 source _common.sh
 source ynh_install_ruby__2
-source ynh_add_extra_apt_repos__3
-source ynh_send_readme_to_admin__2
 source ynh_add_swap
-source ynh_check_ram
 source /usr/share/yunohost/helpers
 
 #=================================================
 # MANAGE SCRIPT FAILURE
 #=================================================
-ynh_script_progression --message="Managing script failure..." --weight=1
 
 ynh_clean_setup () {
 	ynh_clean_check_starting
@@ -28,7 +24,6 @@ ynh_abort_if_errors
 #=================================================
 # RETRIEVE ARGUMENTS FROM THE MANIFEST
 #=================================================
-ynh_script_progression --message="Retrieving arguments from the manifest..." --weight=1
 
 domain=$YNH_APP_ARG_DOMAIN
 path_url="/"
@@ -43,7 +38,7 @@ app=$YNH_APP_INSTANCE_NAME
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
 #=================================================
-ynh_script_progression --message="Validating installation parameters..." --weight=2
+ynh_script_progression --message="Validating installation parameters..."
 
 final_path=/var/www/$app
 test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
@@ -54,7 +49,7 @@ ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
-ynh_script_progression --message="Storing installation settings..." --weight=2
+ynh_script_progression --message="Storing installation settings..."
 
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=path --value=$path_url
@@ -67,7 +62,7 @@ ynh_app_setting_set --app=$app --key=language --value=$language
 #=================================================
 # FIND AND OPEN A PORT
 #=================================================
-ynh_script_progression --message="Configuring firewall..." --weight=1
+ynh_script_progression --message="Configuring firewall..."
 
 # Find an available port
 port_web=$(ynh_find_port --port=3000)
@@ -79,16 +74,16 @@ ynh_app_setting_set --app=$app --key=port_stream --value=$port_stream
 #=================================================
 # INSTALL DEPENDENCIES
 #=================================================
-ynh_script_progression --message="Installing dependencies..." --weight=86
+ynh_script_progression --message="Installing dependencies..."
 
-ynh_install_nodejs --nodejs_version="10"
+ynh_install_nodejs --nodejs_version=$NODEJS_VERSION
 ynh_install_app_dependencies $pkg_dependencies	
 ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 
 #=================================================
 # CREATE A POSTGRESQL DATABASE
 #=================================================
-ynh_script_progression --message="Creating a PostgreSQL database..." --weight=5
+ynh_script_progression --message="Creating a MySQL database..."
 
 # Create postgresql database
 db_name="${app}_production"
@@ -103,12 +98,12 @@ ynh_psql_execute_as_root --sql="ALTER USER $db_user CREATEDB;"
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_script_progression --message="Setting up source files..." --weight=5
+ynh_script_progression --message="Setting up source files..."
 
 ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 # Download, check integrity, uncompress and patch the source from app.src
 mkdir $final_path
-ynh_setup_source  --dest_dir="$final_path/live"
+ynh_setup_source --dest_dir="$final_path/live"
 
 # Temporary workaround for https://github.com/tootsuite/mastodon/issues/13292
 ynh_replace_string --match_string="sidekiq-unique-jobs (6.0.18)" --replace_string="sidekiq-unique-jobs (6.0.20)" --target_file="$final_path/live/Gemfile.lock"
@@ -116,7 +111,7 @@ ynh_replace_string --match_string="sidekiq-unique-jobs (6.0.18)" --replace_strin
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Configuring nginx web server..." --weight=3
+ynh_script_progression --message="Configuring nginx web server..."
 
 # Create a dedicated nginx config
 ynh_add_nginx_config 'port_web port_stream'
@@ -124,7 +119,7 @@ ynh_add_nginx_config 'port_web port_stream'
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
-ynh_script_progression --message="Configuring system user..." --weight=4
+ynh_script_progression --message="Configuring system user..."
 
 # Create a system user
 ynh_system_user_create --username=$app --home_dir=$final_path
@@ -134,82 +129,87 @@ ynh_system_user_create --username=$app --home_dir=$final_path
 #=================================================
 # ADD SWAP IF NEEDED
 #=================================================
-ynh_script_progression --message="Adding swap is needed..." --weight=4
+ynh_script_progression --message="Adding swap is needed..."
 
-total_memory=$(ynh_check_ram)
-total_swap=$(ynh_check_ram --only_swap)
+total_memory=$(ynh_get_ram --total)
 swap_needed=0
 
-if [ $total_memory -lt 2560 ]; then
-	# Need a minimum of 8Go of memory
-	swap_needed=$((2560 - $total_memory))
+if [ $total_memory -lt $MEMORY_NEEDED ]; then
+	# Need a minimum of 2.5Go of memory
+	swap_needed=$(($MEMORY_NEEDED - $total_memory))
 fi
 
-ynh_script_progression --message="Adding $swap_needed Mo to swap..." --weight=1
+ynh_script_progression --message="Adding $swap_needed Mo to swap..."
 ynh_add_swap --size=$swap_needed
 
 #=================================================
 # INSTALLING RUBY AND BUNDLER
 #=================================================
-ynh_script_progression --message="Installing Ruby..." --weight=424
+ynh_script_progression --message="Installing Ruby..."
 
-ynh_install_ruby --ruby_version=2.6.5
-/opt/rbenv/versions/2.6.5/bin/gem update --system
-/opt/rbenv/versions/2.6.5/bin/gem install bundler:1.17.3 --no-document
+ynh_install_ruby --ruby_version=$RUBY_VERSION
+pushd "$final_path/live"
+	gem update --system
+	gem install bundler:$BUNDLER_VERSION --no-document
+popd
 
 #=================================================
 # MODIFY A CONFIG FILE
 #=================================================
-ynh_script_progression --message="Modifying a config file..." --weight=2
+ynh_script_progression --message="Modifying a config file..."
 
-cp -f ../conf/.env.production.sample "$final_path/live/.env.production"
-ynh_replace_string --match_string="__DB_USER__" --replace_string="$app" --target_file="$final_path/live/.env.production"
-ynh_replace_string --match_string="__DB_NAME__" --replace_string="$db_name" --target_file="$final_path/live/.env.production"
-ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$final_path/live/.env.production"
-ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$final_path/live/.env.production"
-ynh_replace_string --match_string="__SMTP_FROM_ADDRESS__" --replace_string="$admin_mail"        --target_file="${final_path}/live/.env.production"
+config="$final_path/live/.env.production"
+cp -f ../conf/.env.production.sample "$config"
+ynh_replace_string --match_string="__DB_USER__" --replace_string="$app" --target_file="$config"
+ynh_replace_string --match_string="__DB_NAME__" --replace_string="$db_name" --target_file="$config"
+ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$config"
+ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$config"
+ynh_replace_string --match_string="__SMTP_FROM_ADDRESS__" --replace_string="$admin_mail" --target_file="$config"
 
 language="$(echo $language | head -c 2)"
-ynh_replace_string --match_string="__LANGUAGE__"      --replace_string="$language" --target_file="$final_path/live/.env.production"
+ynh_replace_string --match_string="__LANGUAGE__" --replace_string="$language" --target_file="$config"
 
 paperclip_secret=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
-ynh_replace_string --match_string="PAPERCLIP_SECRET=" --replace_string="PAPERCLIP_SECRET=$paperclip_secret" --target_file="${final_path}/live/.env.production"
+ynh_replace_string --match_string="PAPERCLIP_SECRET=" --replace_string="PAPERCLIP_SECRET=$paperclip_secret" --target_file="$config"
 ynh_app_setting_set --app="$app" --key=paperclip_secret --value="$paperclip_secret"
 
 secret_key_base=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
-ynh_replace_string --match_string="__SECRET_KEY_BASE__" --replace_string="$secret_key_base" --target_file="$final_path/live/.env.production"
+ynh_replace_string --match_string="__SECRET_KEY_BASE__" --replace_string="$secret_key_base" --target_file="$config"
 ynh_app_setting_set --app="$app" --key=secret_key_base --value="$secret_key_base"
 
 otp_secret=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
-ynh_replace_string --match_string="__OTP_SECRET__" --replace_string="$otp_secret" --target_file="$final_path/live/.env.production"
+ynh_replace_string --match_string="__OTP_SECRET__" --replace_string="$otp_secret" --target_file="$config"
 ynh_app_setting_set --app="$app" --key=otp_secret --value="$otp_secret"
 
+ynh_replace_string --match_string="registrations_mode: 'open'" --replace_string="registrations_mode: 'none'" --target_file="$final_path/live/config/settings.yml"
+ynh_replace_string --match_string="min_invite_role: 'admin'" --replace_string="min_invite_role: 'none'" --target_file="$final_path/live/config/settings.yml"
+
 #=================================================
 # INSTALLING MASTODON
 #=================================================
-ynh_script_progression --message="Installing Mastodon..." --weight=2230
+ynh_script_progression --message="Installing Mastodon..."
 
 chown -R "$app": "$final_path"
 
 pushd "$final_path/live"
 	ynh_use_nodejs
-	sudo -u "$app" env PATH=$PATH /opt/rbenv/versions/2.6.5/bin/bundle install -j$(getconf _NPROCESSORS_ONLN) --deployment --without development test
-	sudo -u "$app" env PATH=$PATH yarn install --pure-lockfile
-	sudo -u "$app" echo "SAFETY_ASSURED=1">> .env.production
-	sudo -u "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/2.6.5/bin/bundle exec rails db:setup --quiet
-	sudo -u "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/2.6.5/bin/bundle exec rails assets:precompile --quiet
-	sudo -u "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/2.6.5/bin/bundle exec rake mastodon:webpush:generate_vapid_key > key.txt
-	sudo -u "$app" env PATH=$PATH RAILS_ENV=production bin/tootctl accounts create "$admin" --email="$admin_mail" --confirmed --role=admin > acc.txt
+	bundle config deployment 'true'
+	bundle config without 'development test'
+	bundle install -j$(getconf _NPROCESSORS_ONLN)
+	yarn install --pure-lockfile
+	echo "SAFETY_ASSURED=1">> $config
+	RAILS_ENV=production bundle exec rails db:setup --quiet
+	RAILS_ENV=production bundle exec rails assets:precompile --quiet
+	RAILS_ENV=production bundle exec rake mastodon:webpush:generate_vapid_key > key.txt
+	RAILS_ENV=production bin/tootctl accounts create "$admin" --email="$admin_mail" --confirmed --role=admin > /dev/null
+	RAILS_ENV=production bin/tootctl accounts modify "$admin" --approve
 popd
 
-admin_pass=$( tail -1 $final_path/live/acc.txt | head -1 | cut -c 15- )
-ynh_secure_remove --file="$final_path/live/acc.txt"
-
 vapid_private_key=$(grep -oP "VAPID_PRIVATE_KEY=\K.+" "$final_path/live/key.txt")
 vapid_public_key=$(grep -oP "VAPID_PUBLIC_KEY=\K.+" "$final_path/live/key.txt")
 
-ynh_replace_string --match_string="__VAPID_PRIVATE_KEY__" --replace_string="$vapid_private_key"        --target_file="${final_path}/live/.env.production"
-ynh_replace_string --match_string="__VAPID_PUBLIC_KEY__" --replace_string="$vapid_public_key"        --target_file="${final_path}/live/.env.production"
+ynh_replace_string --match_string="__VAPID_PRIVATE_KEY__" --replace_string="$vapid_private_key" --target_file="$config"
+ynh_replace_string --match_string="__VAPID_PUBLIC_KEY__" --replace_string="$vapid_public_key" --target_file="$config"
 
 ynh_app_setting_set --app="$app" --key=vapid_private_key --value="$vapid_private_key"
 ynh_app_setting_set --app="$app" --key=vapid_public_key --value="$vapid_public_key"
@@ -217,41 +217,37 @@ ynh_app_setting_set --app="$app" --key=vapid_public_key --value="$vapid_public_k
 ynh_secure_remove --file="$final_path/live/key.txt"
 
 #=================================================
-# SETUP CRON JOB FOR REMOVING CACHE
+# SETUP THE CRON FILE
 #=================================================
-ynh_script_progression --message="Setuping a cron job for removing cache..." --weight=1
+ynh_script_progression --message="Setuping the cron file..."
 
 ynh_replace_string --match_string="__FINAL_PATH__" --replace_string="$final_path" --target_file="../conf/cron"
-ynh_replace_string --match_string="__USER__" --replace_string="$app"  --target_file="../conf/cron"
-sudo cp -f ../conf/cron /etc/cron.d/$app 
+cp -f ../conf/cron /etc/cron.d/$app 
 
 #=================================================
 # SETUP SYSTEMD
 #=================================================
-ynh_script_progression --message="Configuring a systemd service..." --weight=5
+ynh_script_progression --message="Configuring a systemd service..."
 
 # Create a dedicated systemd config
-ynh_replace_string --match_string="__PORT_WEB__"    --replace_string="$port_web"    --target_file="../conf/mastodon-web.service"
-ynh_replace_string --match_string="__PORT_STREAM__" --replace_string="$port_stream" --target_file="../conf/mastodon-streaming.service"
-ynh_replace_string --match_string="__NODEJS_PATH__" --replace_string="$nodejs_path" --target_file="../conf/mastodon-streaming.service"
-ynh_add_systemd_config --service="$app-web"       --template="mastodon-web.service"
-ynh_add_systemd_config --service="$app-sidekiq"   --template="mastodon-sidekiq.service"
-ynh_add_systemd_config --service="$app-streaming" --template="mastodon-streaming.service"
+ynh_add_systemd_config --service="$app-web" --template="mastodon-web.service" --others_var="port_web RBENV_ROOT"
+ynh_add_systemd_config --service="$app-sidekiq" --template="mastodon-sidekiq.service" --others_var="RBENV_ROOT"
+ynh_add_systemd_config --service="$app-streaming" --template="mastodon-streaming.service" --others_var="port_stream ynh_node_load_PATH ynh_node"
 
 #=================================================
 # STORE THE CONFIG FILE CHECKSUM
 #=================================================
-ynh_script_progression --message="Storing the config file checksum..." --weight=1
+ynh_script_progression --message="Storing the config file checksum..."
 
 # Calculate and store the config file checksum into the app settings
-ynh_store_file_checksum --file="${final_path}/live/.env.production"
+ynh_store_file_checksum --file="$config"
 
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
 # SECURE FILES AND DIRECTORIES
 #=================================================
-ynh_script_progression --message="Securing files and directories..." --weight=9
+ynh_script_progression --message="Securing files and directories..."
 
 # Set permissions to app files
 chown -R "$app": "$final_path"
@@ -259,16 +255,16 @@ chown -R "$app": "$final_path"
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
 #=================================================
-ynh_script_progression --message="Integrating service in YunoHost..." --weight=3
+ynh_script_progression --message="Integrating service in YunoHost..."
 
-yunohost service add "$app-web"
-yunohost service add "$app-sidekiq"
-yunohost service add "$app-streaming"
+yunohost service add "$app-web" --description "$app web service" --log_type "systemd"
+yunohost service add "$app-sidekiq" --description "$app sidekiq service" --log_type "systemd"
+yunohost service add "$app-streaming" --description "$app streaming service" --log_type "systemd"
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting a systemd service..." --weight=47
+ynh_script_progression --message="Starting a systemd service..."
 
 ynh_systemd_action --service_name=${app}-web --action="start" --log_path=systemd --line_match="Listening on tcp"
 ynh_systemd_action --service_name=${app}-sidekiq --action="start" --log_path=systemd --line_match="Starting processing"
@@ -277,7 +273,7 @@ ynh_systemd_action --service_name=${app}-streaming --action="start" --log_path=s
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_script_progression --message="Configuring SSOwat..." --weight=2
+ynh_script_progression --message="Configuring SSOwat..."
 
 # Make app public if necessary
 if [ $is_public -eq 1 ]
@@ -289,7 +285,7 @@ fi
 #=================================================
 # RELOAD NGINX
 #=================================================
-ynh_script_progression --message="Reloading nginx web server..." --weight=2
+ynh_script_progression --message="Reloading nginx web server..."
 
 ynh_systemd_action --service_name=nginx --action=reload
 
@@ -297,4 +293,4 @@ ynh_systemd_action --service_name=nginx --action=reload
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Installation of $app completed" --last
+ynh_script_progression --message="Installation of $app completed"
diff --git a/scripts/remove b/scripts/remove
index f2b2e16..9fac8f2 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -8,14 +8,13 @@
 
 source _common.sh
 source ynh_install_ruby__2
-source ynh_add_extra_apt_repos__3
 source ynh_add_swap
 source /usr/share/yunohost/helpers
 
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=6
+ynh_script_progression --message="Loading installation settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
@@ -29,31 +28,30 @@ final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 #=================================================
 # REMOVE SERVICE INTEGRATION IN YUNOHOST
 #=================================================
-ynh_script_progression --message="Removing service integration in YunoHost..." --weight=2
 
 # Remove the service from the list of services known by Yunohost (added from `yunohost service add`)
 if ynh_exec_warn_less yunohost service status "$app-web" >/dev/null
 then
-	ynh_script_progression --message="Removing $app-web service..." --weight=2
+	ynh_script_progression --message="Removing $app-web service..."
 	yunohost service remove "$app-web"
 fi
 
 if ynh_exec_warn_less yunohost service status "$app-sidekiq" >/dev/null
 then
-	ynh_script_progression --message="Removing $app-sidekiq service..." --weight=2
+	ynh_script_progression --message="Removing $app-sidekiq service..."
 	yunohost service remove "$app-sidekiq"
 fi
 
 if ynh_exec_warn_less yunohost service status "$app-streaming" >/dev/null
 then
-	ynh_script_progression --message="Removing $app-streaming service..." --weight=2
+	ynh_script_progression --message="Removing $app-streaming service..."
 	yunohost service remove "$app-streaming"
 fi
 
 #=================================================
 # STOP AND REMOVE SERVICE
 #=================================================
-ynh_script_progression --message="Stopping and removing the systemd service..." --weight=27
+ynh_script_progression --message="Stopping and removing the systemd service..."
 
 # Remove the dedicated systemd config
 ynh_remove_systemd_config --service="$app-web"
@@ -63,7 +61,7 @@ ynh_remove_systemd_config --service="$app-streaming"
 #=================================================
 # REMOVE THE POSTGRESQL DATABASE
 #=================================================
-ynh_script_progression --message="Removing the PostgreSQL database..." --weight=4
+ynh_script_progression --message="Removing the PostgreSQL database..."
 
 # Remove a database if it exists, along with the associated user
 ynh_psql_remove_db --db_user="$db_user" --db_name="$db_name"
@@ -71,7 +69,7 @@ ynh_psql_remove_db --db_user="$db_user" --db_name="$db_name"
 #=================================================
 # REMOVE DEPENDENCIES
 #=================================================
-ynh_script_progression --message="Removing dependencies..." --weight=28
+ynh_script_progression --message="Removing dependencies..."
 
 # Remove metapackage and its dependencies
 ynh_remove_ruby
@@ -82,7 +80,7 @@ ynh_remove_extra_repo
 #=================================================
 # REMOVE APP MAIN DIR
 #=================================================
-ynh_script_progression --message="Removing app main directory..." --weight=16
+ynh_script_progression --message="Removing app main directory..."
 
 # Remove the app directory securely
 ynh_secure_remove --file="$final_path"
@@ -90,7 +88,7 @@ ynh_secure_remove --file="$final_path"
 #=================================================
 # REMOVE NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Removing nginx web server configuration..." --weight=2
+ynh_script_progression --message="Removing nginx web server configuration..."
 
 # Remove the dedicated nginx config
 ynh_remove_nginx_config
@@ -100,7 +98,7 @@ ynh_remove_nginx_config
 #=================================================
 # REMOVE THE CRON FILE
 #=================================================
-ynh_script_progression --message="Removing the cron file..." --weight=2
+ynh_script_progression --message="Removing the cron file..."
 
 # Remove a cron file
 ynh_secure_remove --file="/etc/cron.d/$app"
@@ -113,7 +111,7 @@ ynh_del_swap
 #=================================================
 # REMOVE DEDICATED USER
 #=================================================
-ynh_script_progression --message="Removing the dedicated system user..." --weight=2
+ynh_script_progression --message="Removing the dedicated system user..."
 
 # Delete a system user
 ynh_system_user_delete --username=$app
@@ -122,4 +120,4 @@ ynh_system_user_delete --username=$app
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Removal of $app completed" --last
+ynh_script_progression --message="Removal of $app completed"
diff --git a/scripts/restore b/scripts/restore
index c6e4bc8..513d924 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -9,15 +9,13 @@
 #Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
 source ../settings/scripts/_common.sh
 source ../settings/scripts/ynh_install_ruby__2
-source ../settings/scripts/ynh_add_extra_apt_repos__3
 source ../settings/scripts/ynh_add_swap
-source ../settings/scripts/ynh_check_ram
 source /usr/share/yunohost/helpers
 
 #=================================================
 # MANAGE SCRIPT FAILURE
 #=================================================
-ynh_script_progression --message="Managing script failure..." --weight=2
+ynh_script_progression --message="Managing script failure..."
 
 ynh_clean_setup () {
 	ynh_clean_check_starting
@@ -28,7 +26,7 @@ ynh_abort_if_errors
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_script_progression --message="Loading settings..." --weight=2
+ynh_script_progression --message="Loading settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
@@ -42,7 +40,7 @@ db_pwd=$(ynh_app_setting_get --app=$app --key=db_pwd)
 #=================================================
 # CHECK IF THE APP CAN BE RESTORED
 #=================================================
-ynh_script_progression --message="Validating restoration parameters..." --weight=2
+ynh_script_progression --message="Validating restoration parameters..."
 
 ynh_webpath_available --domain=$domain --path_url=$path_url \
 	|| ynh_die --message="Path not available: ${domain}${path_url}"
@@ -54,21 +52,21 @@ test ! -d $final_path \
 #=================================================
 # RESTORE THE NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Restoring nginx configuration..." --weight=1
+ynh_script_progression --message="Restoring the nginx configuration..."
 
 ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 #=================================================
 # RESTORE THE APP MAIN DIR
 #=================================================
-ynh_script_progression --message="Restoring the app main directory..." --weight=105
+ynh_script_progression --message="Restoring the app main directory..."
 
 ynh_restore_file --origin_path="$final_path"
 
 #=================================================
 # RECREATE THE DEDICATED USER
 #=================================================
-ynh_script_progression --message="Recreating the dedicated system user..." --weight=5
+ynh_script_progression --message="Recreating the dedicated system user..."
 
 # Create the dedicated user (if not existing)
 ynh_system_user_create --username=$app --home_dir=$final_path
@@ -76,7 +74,7 @@ ynh_system_user_create --username=$app --home_dir=$final_path
 #=================================================
 # RESTORE USER RIGHTS
 #=================================================
-ynh_script_progression --message="Restoring users rights..." --weight=4
+ynh_script_progression --message="Restoring user rights..."
 
 # Restore permissions on app files
 chown -R $app: $final_path
@@ -86,42 +84,43 @@ chown -R $app: $final_path
 #=================================================
 # ADD SWAP IF NEEDED
 #=================================================
-ynh_script_progression --message="Adding swap if needed..." --weight=4
+ynh_script_progression --message="Adding swap if needed..."
 
-total_memory=$(ynh_check_ram)
-total_swap=$(ynh_check_ram --only_swap)
+total_memory=$(ynh_get_ram --total)
 swap_needed=0
 
-if [ $total_memory -lt 2560 ]; then
+if [ $total_memory -lt $MEMORY_NEEDED ]; then
 	# Need a minimum of 8Go of memory
-	swap_needed=$((2560 - $total_memory))
+	swap_needed=$(($MEMORY_NEEDED - $total_memory))
 fi
 
-ynh_script_progression --message="Adding $swap_needed Mo to swap..." --weight=1
+ynh_script_progression --message="Adding $swap_needed Mo to swap..."
 ynh_add_swap --size=$swap_needed
 
 #=================================================
 # REINSTALL DEPENDENCIES
 #=================================================
-ynh_script_progression --message="Reinstalling dependencies..." --weight=63
+ynh_script_progression --message="Reinstalling dependencies..."
 
-ynh_install_nodejs --nodejs_version="10"
+ynh_install_nodejs --nodejs_version=$NODEJS_VERSION
 ynh_install_app_dependencies $pkg_dependencies	
 ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 
 #=================================================
 # INSTALLING RUBY AND BUNDLER
 #=================================================
-ynh_script_progression --message="Installing Ruby..." --weight=393
+ynh_script_progression --message="Installing Ruby..."
 
-ynh_install_ruby --ruby_version=2.6.5
-/opt/rbenv/versions/2.6.5/bin/gem update --system
-/opt/rbenv/versions/2.6.5/bin/gem install bundler:1.17.3 --no-document
+ynh_install_ruby --ruby_version=$RUBY_VERSION
+pushd "$final_path/live"
+	gem update --system
+	gem install bundler:$BUNDLER_VERSION --no-document
+popd
 
 #=================================================
 # RESTORE THE POSTGRESQL DATABASE
 #=================================================
-ynh_script_progression --message="Restoring the PostgreSQL database..." --weight=18
+ynh_script_progression --message="Restoring the PostgreSQL database..."
 
 ynh_psql_test_if_first_run
 ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
@@ -131,7 +130,7 @@ ynh_psql_execute_file_as_root --file="./db.sql" --database="$db_name"
 #=================================================
 # RESTORE SYSTEMD
 #=================================================
-ynh_script_progression --message="Restoring the systemd configuration..." --weight=3
+ynh_script_progression --message="Restoring the systemd configuration..."
 
 ynh_restore_file --origin_path="/etc/systemd/system/$app-web.service"
 ynh_restore_file --origin_path="/etc/systemd/system/$app-sidekiq.service"
@@ -141,16 +140,16 @@ systemctl enable "$app-web" "$app-sidekiq" "$app-streaming"
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
 #=================================================
-ynh_script_progression --message="Integrating service in YunoHost..." --weight=3
+ynh_script_progression --message="Integrating service in YunoHost..."
 
-yunohost service add $app-web
-yunohost service add $app-sidekiq
-yunohost service add $app-streaming
+yunohost service add "$app-web" --description "$app web service" --log_type "systemd"
+yunohost service add "$app-sidekiq" --description "$app sidekiq service" --log_type "systemd"
+yunohost service add "$app-streaming" --description "$app streaming service" --log_type "systemd"
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting a systemd service..." --weight=41
+ynh_script_progression --message="Starting a systemd service..."
 
 ynh_systemd_action --service_name=${app}-web --action="start" --log_path=systemd --line_match="Listening on tcp"
 ynh_systemd_action --service_name=${app}-sidekiq --action="start" --log_path=systemd --line_match="Starting processing"
@@ -159,7 +158,7 @@ ynh_systemd_action --service_name=${app}-streaming --action="start" --log_path=s
 #=================================================
 # RESTORE THE CRON FILE
 #=================================================
-ynh_script_progression --message="Restoring a cron job for removing cache..." --weight=2
+ynh_script_progression --message="Restoring the cron file..."
 
 ynh_restore_file --origin_path="/etc/cron.d/$app"
 
@@ -168,7 +167,7 @@ ynh_restore_file --origin_path="/etc/cron.d/$app"
 #=================================================
 # RELOAD NGINX
 #=================================================
-ynh_script_progression --message="Reloading nginx web server..." --weight=2
+ynh_script_progression --message="Reloading nginx web server..."
 
 ynh_systemd_action --service_name=nginx --action=reload
 
@@ -176,4 +175,4 @@ ynh_systemd_action --service_name=nginx --action=reload
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Restoration completed for $app" --last
+ynh_script_progression --message="Restoration completed for $app"
diff --git a/scripts/upgrade b/scripts/upgrade
index 153437b..6445cc8 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -8,15 +8,13 @@
 
 source _common.sh
 source ynh_install_ruby__2
-source ynh_add_extra_apt_repos__3
 source ynh_add_swap
-source ynh_check_ram
 source /usr/share/yunohost/helpers
 
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=4
+ynh_script_progression --message="Loading installation settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
@@ -42,14 +40,16 @@ vapid_public_key=$(ynh_app_setting_get --app=$app --key=vapid_public_key)
 #=================================================
 # CHECK VERSION
 #=================================================
-ynh_script_progression --message="Checking version..." --weight=1
+ynh_script_progression --message="Checking version..."
 
 upgrade_type=$(ynh_check_app_version_changed)
 
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
-ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
+ynh_script_progression --message="Ensuring downward compatibility..."
+
+config="$final_path/live/.env.production"
 
 # If db_name doesn't exist, create it
 if [ -z "$db_name" ]; then
@@ -65,8 +65,8 @@ fi
 
 # Check if admin is not null
 if [[ "$admin" = "" || "$language" = "" ]]; then
-    echo "Unable to upgrade, please contact support"
-    ynh_die
+	echo "Unable to upgrade, please contact support"
+	ynh_die
 fi
 
 # If port_web doesn't exist, create it, need for old install
@@ -87,40 +87,40 @@ if [[ -z "$db_pwd" ]]; then
 	ynh_app_setting_set --app=$app --key=db_pwd --value=$db_pwd
 	ynh_psql_test_if_first_run
 	sudo --login --user=postgres psql -c"ALTER user $app WITH PASSWORD '$db_pwd'" postgres
-	ynh_replace_string --match_string="DB_PASS=" --replace_string="DB_PASS=${db_pwd}" --target_file="${final_path}/live/.env.production"
+	ynh_replace_string --match_string="DB_PASS=" --replace_string="DB_PASS=${db_pwd}" --target_file="$config"
 fi
 
 # If paperclip_secret doesn't exist, retrieve it or create it
 if [[ -z "$paperclip_secret" ]]; then
-	paperclip_secret=$(grep -oP "PAPERCLIP_SECRET=\K\w+" ${final_path}/live/.env.production)
+	paperclip_secret=$(grep -oP "PAPERCLIP_SECRET=\K\w+" $config)
 	if [[ -z "$paperclip_secret" ]]; then
-	    paperclip_secret=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
+		paperclip_secret=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
 	fi
 	ynh_app_setting_set --app=$app --key=paperclip_secret --value="$paperclip_secret"
 fi
 
 # If secret_key_base doesn't exist, retrieve it or create it
 if [[ -z "$secret_key_base" ]]; then
-	secret_key_base=$(grep -oP "SECRET_KEY_BASE=\K\w+" ${final_path}/live/.env.production)
+	secret_key_base=$(grep -oP "SECRET_KEY_BASE=\K\w+" $config)
 	if [[ -z "$secret_key_base" ]]; then
-	    secret_key_base=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
+		secret_key_base=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
 	fi
 	ynh_app_setting_set --app=$app --key=secret_key_base --value="$secret_key_base"
 fi
 
 # If otp_secret doesn't exist, retrieve it or create it
 if [[ -z "$otp_secret" ]]; then
-	otp_secret=$(grep -oP "OTP_SECRET=\K\w+" ${final_path}/live/.env.production)
+	otp_secret=$(grep -oP "OTP_SECRET=\K\w+" $config)
 	if [[ -z "$otp_secret" ]]; then
-	    otp_secret=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
+		otp_secret=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
 	fi
 	ynh_app_setting_set --app=$app --key=otp_secret --value="$otp_secret"
 fi
 
 # If vapid_private_key doesn't exist, retrieve it or create it
 if [[ -z "$vapid_private_key" ]]; then
-	vapid_private_key=$(grep -oP "VAPID_PRIVATE_KEY=\K.+" ${final_path}/live/.env.production)
-	vapid_public_key=$(grep -oP "VAPID_PUBLIC_KEY=\K.+" ${final_path}/live/.env.production)
+	vapid_private_key=$(grep -oP "VAPID_PRIVATE_KEY=\K.+" $config)
+	vapid_public_key=$(grep -oP "VAPID_PUBLIC_KEY=\K.+" $config)
 	ynh_app_setting_set "$app" vapid_private_key "$vapid_private_key"
 	ynh_app_setting_set "$app" vapid_public_key "$vapid_public_key"
 fi
@@ -131,7 +131,7 @@ ynh_remove_extra_repo
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================
-ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=442
+ynh_script_progression --message="Backing up the app before upgrading (may take a while)..."
 
 # Backup the current version of the app
 ynh_backup_before_upgrade
@@ -160,7 +160,7 @@ path_url=$(ynh_normalize_url_path --path_url=$path_url)
 #=================================================
 # STOP SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Stopping a systemd service..." --weight=22
+ynh_script_progression --message="Stopping a systemd service..."
 
 ynh_systemd_action --service_name=${app}-web --action="stop" --log_path=systemd --line_match="Stopped"
 ynh_systemd_action --service_name=${app}-sidekiq --action="stop" --log_path=systemd --line_match="Stopped"
@@ -172,53 +172,53 @@ ynh_systemd_action --service_name=${app}-streaming --action="stop" --log_path=sy
 
 if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
-    ynh_script_progression --message="Upgrading source files..." --weight=14
+	ynh_script_progression --message="Upgrading source files..."
 
-    # Download Mastodon
-    tmpdir="$(mktemp -d)"
+	# Download Mastodon
+	tmpdir="$(mktemp -d)"
 
-    mkdir $tmpdir/system
-    if [ -d "$final_path/live/public/system" ]; then
-	    rsync -a "$final_path/live/public/system" "$tmpdir/."
-    fi    
-    rsync -a "$final_path/live/.env.production" "$tmpdir/."
-    ynh_secure_remove --file="$final_path/live"
-    ynh_setup_source --dest_dir="$final_path/live"
+	mkdir $tmpdir/system
+	if [ -d "$final_path/live/public/system" ]; then
+		rsync -a "$final_path/live/public/system" "$tmpdir/."
+	fi
+	rsync -a "$config" "$tmpdir/."
+	ynh_secure_remove --file="$final_path/live"
+	ynh_setup_source --dest_dir="$final_path/live"
 
-    # Temporary workaround for https://github.com/tootsuite/mastodon/issues/13292
-    ynh_replace_string --match_string="sidekiq-unique-jobs (6.0.18)" --replace_string="sidekiq-unique-jobs (6.0.20)" --target_file="$final_path/live/Gemfile.lock"
-    
-    if [ -d "$tmpdir/system" ]; then
-	    rsync -a "$tmpdir/system" "$final_path/live/public/."
-    fi
-    rsync -a "$tmpdir/.env.production" "$final_path/live/."
-    ynh_secure_remove --file="$tmpdir"
+	# Temporary workaround for https://github.com/tootsuite/mastodon/issues/13292
+	ynh_replace_string --match_string="sidekiq-unique-jobs (6.0.18)" --replace_string="sidekiq-unique-jobs (6.0.20)" --target_file="$final_path/live/Gemfile.lock"
 
-    # Clean files which are not needed anymore
-    ynh_secure_remove --file="$final_path/live/config/initializers/timeout.rb"
+	if [ -d "$tmpdir/system" ]; then
+		rsync -a "$tmpdir/system" "$final_path/live/public/."
+	fi
+	rsync -a "$tmpdir/.env.production" "$final_path/live/."
+	ynh_secure_remove --file="$tmpdir"
+
+	# Clean files which are not needed anymore
+	ynh_secure_remove --file="$final_path/live/config/initializers/timeout.rb"
 fi
 
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Upgrading nginx web server configuration..." --weight=3
+ynh_script_progression --message="Upgrading nginx web server configuration..."
 
 ynh_add_nginx_config 'port_web port_stream'
 
 #=================================================
 # UPGRADE DEPENDENCIES
 #=================================================
-ynh_script_progression --message="Upgrading dependencies..." --weight=24
+ynh_script_progression --message="Upgrading dependencies..."
 
 ynh_remove_nodejs
-ynh_install_nodejs --nodejs_version="10"
-ynh_install_app_dependencies $pkg_dependencies	
+ynh_install_nodejs --nodejs_version=$NODEJS_VERSION
+ynh_install_app_dependencies $pkg_dependencies
 ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
-ynh_script_progression --message="Making sure dedicated system user exists..." --weight=7
+ynh_script_progression --message="Making sure dedicated system user exists..."
 
 # Create a dedicated user (if not existing)
 ynh_system_user_create --username=$app --home_dir=$final_path
@@ -228,114 +228,110 @@ ynh_system_user_create --username=$app --home_dir=$final_path
 #=================================================
 # ADD SWAP IF NEEDED
 #=================================================
-ynh_script_progression --message="Adding swap if needed..." --weight=7
+ynh_script_progression --message="Adding swap if needed..."
 
-total_memory=$(ynh_check_ram)
-total_swap=$(ynh_check_ram --only_swap)
+total_memory=$(ynh_get_ram --total)
 swap_needed=0
 
-if [ $total_memory -lt 2560 ]; then
+if [ $total_memory -lt $MEMORY_NEEDED ]; then
 	# Need a minimum of 8Go of memory
-	swap_needed=$((2560 - $total_memory))
+	swap_needed=$(($MEMORY_NEEDED - $total_memory))
 fi
 
-ynh_script_progression --message="Adding $swap_needed Mo to swap..." --weight=1
+ynh_script_progression --message="Adding $swap_needed Mo to swap..."
 ynh_add_swap --size=$swap_needed
 
 #=================================================
 # INSTALLING RUBY AND BUNDLER
 #=================================================
-ynh_script_progression --message="Installing Ruby..." --weight=424
+ynh_script_progression --message="Installing Ruby..."
 
-ynh_install_ruby --ruby_version=2.6.5
-/opt/rbenv/versions/2.6.5/bin/gem update --system
-/opt/rbenv/versions/2.6.5/bin/gem install bundler:1.17.3 --no-document
+ynh_install_ruby --ruby_version=$RUBY_VERSION
+pushd "$final_path/live"
+	gem update --system
+	gem install bundler:$BUNDLER_VERSION --no-document
+popd
 
 #=================================================
 # MODIFY A CONFIG FILE
 #=================================================
-ynh_script_progression --message="Modifying a config file..." --weight=1
+ynh_script_progression --message="Modifying a config file..."
 
-ynh_backup_if_checksum_is_different --file="$final_path/live/.env.production"
-cp -f ../conf/.env.production.sample "$final_path/live/.env.production"
-ynh_replace_string --match_string="__DB_USER__" --replace_string="$app" --target_file="$final_path/live/.env.production"
-ynh_replace_string --match_string="__DB_NAME__" --replace_string="$db_name" --target_file="$final_path/live/.env.production"
-ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$final_path/live/.env.production"
-ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$final_path/live/.env.production"
-ynh_replace_string --match_string="__SMTP_FROM_ADDRESS__" --replace_string="$admin_mail"        --target_file="${final_path}/live/.env.production"
+ynh_backup_if_checksum_is_different --file="$config"
+cp -f ../conf/.env.production.sample "$config"
+ynh_replace_string --match_string="__DB_USER__" --replace_string="$app" --target_file="$config"
+ynh_replace_string --match_string="__DB_NAME__" --replace_string="$db_name" --target_file="$config"
+ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$config"
+ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$config"
+ynh_replace_string --match_string="__SMTP_FROM_ADDRESS__" --replace_string="$admin_mail" --target_file="$config"
 
 language="$(echo $language | head -c 2)"
-ynh_replace_string --match_string="__LANGUAGE__"      --replace_string="$language" --target_file="$final_path/live/.env.production"
+ynh_replace_string --match_string="__LANGUAGE__" --replace_string="$language" --target_file="$config"
 
-ynh_replace_string --match_string="PAPERCLIP_SECRET=" --replace_string="PAPERCLIP_SECRET=$paperclip_secret" --target_file="${final_path}/live/.env.production"
+ynh_replace_string --match_string="PAPERCLIP_SECRET=" --replace_string="PAPERCLIP_SECRET=$paperclip_secret" --target_file="$config"
 
-ynh_replace_string --match_string="__SECRET_KEY_BASE__" --replace_string="$secret_key_base" --target_file="$final_path/live/.env.production"
+ynh_replace_string --match_string="__SECRET_KEY_BASE__" --replace_string="$secret_key_base" --target_file="$config"
 
-ynh_replace_string --match_string="__OTP_SECRET__" --replace_string="$otp_secret" --target_file="$final_path/live/.env.production"
+ynh_replace_string --match_string="__OTP_SECRET__" --replace_string="$otp_secret" --target_file="$config"
 
-ynh_replace_string "__VAPID_PRIVATE_KEY__" "$vapid_private_key"        "$final_path/live/.env.production"
-ynh_replace_string "__VAPID_PUBLIC_KEY__" "$vapid_public_key"        "$final_path/live/.env.production"
+ynh_replace_string --match_string="__VAPID_PRIVATE_KEY__" --replace_string="$vapid_private_key" --target_file="$config"
+ynh_replace_string --match_string="__VAPID_PUBLIC_KEY__" --replace_string="$vapid_public_key" --target_file="$config"
 
 #=================================================
 # UPGRADE MASTODON
 #=================================================
-ynh_script_progression --message="Upgrading Mastodon..." --weight=2640
+ynh_script_progression --message="Upgrading Mastodon..."
 
 chown -R "$app": "$final_path"
 
 pushd "$final_path/live"
-    ynh_use_nodejs
-    sudo -u "$app" env PATH=$PATH /opt/rbenv/versions/2.6.5/bin/bundle install -j$(getconf _NPROCESSORS_ONLN) --deployment --without development test
-    sudo -u "$app" env PATH=$PATH yarn install --pure-lockfile
-    sudo -u "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/2.6.5/bin/bundle exec rails assets:clean
-    sudo -u "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/2.6.5/bin/bundle exec rails assets:precompile
-    sudo -u "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/2.6.5/bin/bundle exec rails db:migrate
-    sudo -u "$app" env PATH=$PATH RAILS_ENV=production bin/tootctl cache clear
+	ynh_use_nodejs
+	bundle config deployment 'true'
+	bundle config without 'development test'
+	bundle install -j$(getconf _NPROCESSORS_ONLN)
+	yarn install --pure-lockfile
+	RAILS_ENV=production bundle exec rails assets:clean
+	RAILS_ENV=production bundle exec rails assets:precompile
+	RAILS_ENV=production bundle exec rails db:migrate
+	RAILS_ENV=production bin/tootctl cache clear
 popd
 
-# If vapid_private_key doesn't exist, retrieve it or create it
-#if [[ -z "$vapid_private_key" ]]; then
-#	sudo -u "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/2.6.0/bin/bundle exec rake mastodon:webpush:generate_vapid_key > key.txt
-#	vapid_private_key=$(grep -oP "VAPID_PRIVATE_KEY=\K.+" "$final_path/live/key.txt")
-#	vapid_public_key=$(grep -oP "VAPID_PUBLIC_KEY=\K.+" "$final_path/live/key.txt")
-#	ynh_app_setting_set "$app" vapid_private_key "$vapid_private_key"
-#	ynh_app_setting_set "$app" vapid_public_key "$vapid_public_key"
-#	ynh_secure_remove "$final_path/live/key.txt"
-#    ynh_replace_string "__VAPID_PRIVATE_KEY__" "$vapid_private_key"        "${final_path}/live/.env.production"
-#    ynh_replace_string "__VAPID_PUBLIC_KEY__" "$vapid_public_key"        "${final_path}/live/.env.production"
-#fi
-
 # Recalculate and store the checksum of the file for the next upgrade.
-ynh_store_file_checksum --file="${final_path}/live/.env.production"
+ynh_store_file_checksum --file="$config"
 
 #=================================================
-# SETUP CRON JOB FOR REMOVING CACHE
+# SETUP THE CRON FILE
 #=================================================
-ynh_script_progression --message="Setuping a cron job for removing cache..." --weight=1
+ynh_script_progression --message="Setuping the cron file..."
 
 ynh_replace_string --match_string="__FINAL_PATH__" --replace_string="$final_path" --target_file="../conf/cron"
-ynh_replace_string --match_string="__USER__" --replace_string="$app"  --target_file="../conf/cron"
-sudo cp -f ../conf/cron /etc/cron.d/$app 
+cp -f ../conf/cron /etc/cron.d/$app 
 
 #=================================================
 # SETUP SYSTEMD
 #=================================================
-ynh_script_progression --message="Upgrading systemd configuration..." --weight=13
+ynh_script_progression --message="Upgrading systemd configuration..."
 
 # Create a dedicated systemd config
-ynh_replace_string --match_string="__PORT_WEB__"    --replace_string="$port_web"    --target_file="../conf/mastodon-web.service"
-ynh_replace_string --match_string="__PORT_STREAM__" --replace_string="$port_stream" --target_file="../conf/mastodon-streaming.service"
-ynh_replace_string --match_string="__NODEJS_PATH__" --replace_string="$nodejs_path" --target_file="../conf/mastodon-streaming.service"
-ynh_add_systemd_config --service="$app-web"       --template="mastodon-web.service"
-ynh_add_systemd_config --service="$app-sidekiq"   --template="mastodon-sidekiq.service"
-ynh_add_systemd_config --service="$app-streaming" --template="mastodon-streaming.service"
+ynh_add_systemd_config --service="$app-web" --template="mastodon-web.service" --others_var="port_web RBENV_ROOT"
+ynh_add_systemd_config --service="$app-sidekiq" --template="mastodon-sidekiq.service" --others_var="RBENV_ROOT"
+ynh_add_systemd_config --service="$app-streaming" --template="mastodon-streaming.service" --others_var="port_stream ynh_node_load_PATH ynh_node"
+
+#=================================================
+# INTEGRATE SERVICE IN YUNOHOST
+#=================================================
+ynh_script_progression --message="Integrating service in YunoHost..."
+
+yunohost service add "$app-web" --description "$app web service" --log_type "systemd"
+yunohost service add "$app-sidekiq" --description "$app sidekiq service" --log_type "systemd"
+yunohost service add "$app-streaming" --description "$app streaming service" --log_type "systemd"
 
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
 # SECURE FILES AND DIRECTORIES
 #=================================================
-ynh_script_progression --message="Securing files and directories..." --weight=9
+ynh_script_progression --message="Securing files and directories..."
 
 # Set permissions on app files
 chown -R $app: $final_path
@@ -343,7 +339,7 @@ chown -R $app: $final_path
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_script_progression --message="Upgrading SSOwat configuration..." --weight=1
+ynh_script_progression --message="Upgrading SSOwat configuration..."
 
 # Make app public if necessary
 if [ $is_public -eq 1 ]
@@ -355,7 +351,7 @@ fi
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting a systemd service..." --weight=48
+ynh_script_progression --message="Starting a systemd service..."
 
 ynh_systemd_action --service_name=${app}-web --action="start" --log_path=systemd --line_match="Listening on tcp"
 ynh_systemd_action --service_name=${app}-sidekiq --action="start" --log_path=systemd --line_match="Starting processing"
@@ -364,7 +360,7 @@ ynh_systemd_action --service_name=${app}-streaming --action="start" --log_path=s
 #=================================================
 # RELOAD NGINX
 #=================================================
-ynh_script_progression --message="Reloading nginx web server..." --weight=2
+ynh_script_progression --message="Reloading nginx web server..."
 
 ynh_systemd_action --service_name=nginx --action=reload
 
@@ -372,4 +368,4 @@ ynh_systemd_action --service_name=nginx --action=reload
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Upgrade of $app completed" --last
+ynh_script_progression --message="Upgrade of $app completed"
diff --git a/scripts/ynh_add_extra_apt_repos__3 b/scripts/ynh_add_extra_apt_repos__3
deleted file mode 100644
index 3276f00..0000000
--- a/scripts/ynh_add_extra_apt_repos__3
+++ /dev/null
@@ -1,294 +0,0 @@
-#!/bin/bash
-
-# Pin a repository.
-#
-# usage: ynh_pin_repo --package=packages --pin=pin_filter [--priority=priority_value] [--name=name] [--append]
-# | arg: -p, --package - Packages concerned by the pin. Or all, *.
-# | arg: -i, --pin - Filter for the pin.
-# | arg: -p, --priority - Priority for the pin
-# | arg: -n, --name - Name for the files for this repo, $app as default value.
-# | arg: -a, --append - Do not overwrite existing files.
-#
-# See https://manpages.debian.org/stretch/apt/apt_preferences.5.en.html for information about pinning.
-#
-ynh_pin_repo () {
-	# Declare an array to define the options of this helper.
-	local legacy_args=pirna
-	declare -Ar args_array=( [p]=package= [i]=pin= [r]=priority= [n]=name= [a]=append )
-	local package
-	local pin
-	local priority
-	local name
-	local append
-	# Manage arguments with getopts
-	ynh_handle_getopts_args "$@"
-	package="${package:-*}"
-	priority=${priority:-50}
-	name="${name:-$app}"
-	append=${append:-0}
-
-	if [ $append -eq 1 ]
-	then
-		append="tee -a"
-	else
-		append="tee"
-	fi
-
-	mkdir -p "/etc/apt/preferences.d"
-	echo "Package: $package
-Pin: $pin
-Pin-Priority: $priority" \
-	| $append "/etc/apt/preferences.d/$name"
-}
-
-# Add a repository.
-#
-# usage: ynh_add_repo --uri=uri --suite=suite --component=component [--name=name] [--append]
-# | arg: -u, --uri - Uri of the repository.
-# | arg: -s, --suite - Suite of the repository.
-# | arg: -c, --component - Component of the repository.
-# | arg: -n, --name - Name for the files for this repo, $app as default value.
-# | arg: -a, --append - Do not overwrite existing files.
-#
-# Example for a repo like deb http://forge.yunohost.org/debian/ stretch stable
-#                             uri                               suite   component
-# ynh_add_repo --uri=http://forge.yunohost.org/debian/ --suite=stretch --component=stable
-#
-ynh_add_repo () {
-	# Declare an array to define the options of this helper.
-	local legacy_args=uscna
-	declare -Ar args_array=( [u]=uri= [s]=suite= [c]=component= [n]=name= [a]=append )
-	local uri
-	local suite
-	local component
-	local name
-	local append
-	# Manage arguments with getopts
-	ynh_handle_getopts_args "$@"
-	name="${name:-$app}"
-	append=${append:-0}
-
-	if [ $append -eq 1 ]
-	then
-		append="tee -a"
-	else
-		append="tee"
-	fi
-
-	mkdir -p "/etc/apt/sources.list.d"
-	# Add the new repo in sources.list.d
-	echo "deb $uri $suite $component" \
-		| $append "/etc/apt/sources.list.d/$name.list"
-}
-
-# Add an extra repository correctly, pin it and get the key.
-#
-# usage: ynh_install_extra_repo --repo="repo" [--key=key_url] [--priority=priority_value] [--name=name] [--append]
-# | arg: -r, --repo - Complete url of the extra repository.
-# | arg: -k, --key - url to get the public key.
-# | arg: -p, --priority - Priority for the pin
-# | arg: -n, --name - Name for the files for this repo, $app as default value.
-# | arg: -a, --append - Do not overwrite existing files.
-ynh_install_extra_repo () {
-	# Declare an array to define the options of this helper.
-	local legacy_args=rkpna
-	declare -Ar args_array=( [r]=repo= [k]=key= [p]=priority= [n]=name= [a]=append )
-	local repo
-	local key
-	local priority
-	local name
-	local append
-	# Manage arguments with getopts
-	ynh_handle_getopts_args "$@"
-	name="${name:-$app}"
-	append=${append:-0}
-	key=${key:-0}
-	priority=${priority:-}
-
-	if [ $append -eq 1 ]
-	then
-		append="--append"
-		wget_append="tee -a"
-	else
-		append=""
-		wget_append="tee"
-	fi
-
-	# Split the repository into uri, suite and components.
-	# Remove "deb " at the beginning of the repo.
-	repo="${repo#deb }"
-
-	# Get the uri
-	local uri="$(echo "$repo" | awk '{ print $1 }')"
-
-	# Get the suite
-	local suite="$(echo "$repo" | awk '{ print $2 }')"
-
-	# Get the components
-	local component="${repo##$uri $suite }"
-
-	# Add the repository into sources.list.d
-	ynh_add_repo --uri="$uri" --suite="$suite" --component="$component" --name="$name" $append
-
-	# Pin the new repo with the default priority, so it won't be used for upgrades.
-	# Build $pin from the uri without http and any sub path
-	local pin="${uri#*://}"
-	pin="${pin%%/*}"
-	# Set a priority only if asked
-	if [ -n "$priority" ]
-	then
-		priority="--priority=$priority"
-	fi
-	ynh_pin_repo --package="*" --pin="origin \"$pin\"" $priority --name="$name" $append
-
-	# Get the public key for the repo
-	if [ -n "$key" ]
-	then
-		mkdir -p "/etc/apt/trusted.gpg.d"
-		wget -q "$key" -O - | gpg --dearmor | $wget_append /etc/apt/trusted.gpg.d/$name.gpg > /dev/null
-	fi
-
-	# Update the list of package with the new repo
-	ynh_package_update
-}
-
-# Remove an extra repository and the assiociated configuration.
-#
-# usage: ynh_remove_extra_repo [--name=name]
-# | arg: -n, --name - Name for the files for this repo, $app as default value.
-ynh_remove_extra_repo () {
-	# Declare an array to define the options of this helper.
-	local legacy_args=n
-	declare -Ar args_array=( [n]=name= )
-	local name
-	# Manage arguments with getopts
-	ynh_handle_getopts_args "$@"
-	name="${name:-$app}"
-
-	ynh_secure_remove "/etc/apt/sources.list.d/$name.list"
-	ynh_secure_remove "/etc/apt/preferences.d/$name"
-	ynh_secure_remove "/etc/apt/trusted.gpg.d/$name.gpg"
-	ynh_secure_remove "/etc/apt/trusted.gpg.d/$name.asc"
-
-	# Update the list of package to exclude the old repo
-	ynh_package_update
-}
-
-# Install packages from an extra repository properly.
-#
-# usage: ynh_install_extra_app_dependencies --repo="repo" --package="dep1 dep2" [--key=key_url] [--name=name]
-# | arg: -r, --repo - Complete url of the extra repository.
-# | arg: -p, --package - The packages to install from this extra repository
-# | arg: -k, --key - url to get the public key.
-# | arg: -n, --name - Name for the files for this repo, $app as default value.
-ynh_install_extra_app_dependencies () {
-	# Declare an array to define the options of this helper.
-	local legacy_args=rpkn
-	declare -Ar args_array=( [r]=repo= [p]=package= [k]=key= [n]=name= )
-	local repo
-	local package
-	local key
-	local name
-	# Manage arguments with getopts
-	ynh_handle_getopts_args "$@"
-	name="${name:-$app}"
-	key=${key:-0}
-
-	# Set a key only if asked
-	if [ -n "$key" ]
-	then
-		key="--key=$key"
-	fi
-	# Add an extra repository for those packages
-	ynh_install_extra_repo --repo="$repo" $key --priority=995 --name=$name
-
-	# Install requested dependencies from this extra repository.
-	ynh_add_app_dependencies --package="$package"
-
-	# Remove this extra repository after packages are installed
-	ynh_remove_extra_repo --name=$app
-}
-
-#=================================================
-
-# patched version of ynh_install_app_dependencies to be used with ynh_add_app_dependencies
-
-# Define and install dependencies with a equivs control file
-# This helper can/should only be called once per app
-#
-# usage: ynh_install_app_dependencies dep [dep [...]]
-# | arg: dep - the package name to install in dependence
-#   You can give a choice between some package with this syntax : "dep1|dep2"
-#   Example : ynh_install_app_dependencies dep1 dep2 "dep3|dep4|dep5"
-#   This mean in the dependence tree : dep1 & dep2 & (dep3 | dep4 | dep5)
-#
-# Requires YunoHost version 2.6.4 or higher.
-ynh_install_app_dependencies () {
-    local dependencies=$@
-    dependencies="$(echo "$dependencies" | sed 's/\([^\<=\>]\)\ \([^(]\)/\1, \2/g')"
-    dependencies=${dependencies//|/ | }
-    local manifest_path="../manifest.json"
-    if [ ! -e "$manifest_path" ]; then
-    	manifest_path="../settings/manifest.json"	# Into the restore script, the manifest is not at the same place
-    fi
-
-    local version=$(grep '\"version\": ' "$manifest_path" | cut -d '"' -f 4)	# Retrieve the version number in the manifest file.
-    if [ ${#version} -eq 0 ]; then
-        version="1.0"
-    fi
-    local dep_app=${app//_/-}	# Replace all '_' by '-'
-
-    # Handle specific versions
-    if [[ "$dependencies" =~ [\<=\>] ]]
-    then
-        # Replace version specifications by relationships syntax
-        # https://www.debian.org/doc/debian-policy/ch-relationships.html
-        # Sed clarification
-        # [^(\<=\>] ignore if it begins by ( or < = >. To not apply twice.
-        # [\<=\>] matches < = or >
-        # \+ matches one or more occurence of the previous characters, for >= or >>.
-        # [^,]\+ matches all characters except ','
-        # Ex: package>=1.0 will be replaced by package (>= 1.0)
-        dependencies="$(echo "$dependencies" | sed 's/\([^(\<=\>]\)\([\<=\>]\+\)\([^,]\+\)/\1 (\2 \3)/g')"
-    fi
-
-    cat > /tmp/${dep_app}-ynh-deps.control << EOF	# Make a control file for equivs-build
-Section: misc
-Priority: optional
-Package: ${dep_app}-ynh-deps
-Version: ${version}
-Depends: ${dependencies}
-Architecture: all
-Description: Fake package for $app (YunoHost app) dependencies
- This meta-package is only responsible of installing its dependencies.
-EOF
-    ynh_package_install_from_equivs /tmp/${dep_app}-ynh-deps.control \
-        || ynh_die --message="Unable to install dependencies"	# Install the fake package and its dependencies
-    rm /tmp/${dep_app}-ynh-deps.control
-    ynh_app_setting_set --app=$app --key=apt_dependencies --value="$dependencies"
-}
-
-ynh_add_app_dependencies () {
-	# Declare an array to define the options of this helper.
-	local legacy_args=pr
-	declare -Ar args_array=( [p]=package= [r]=replace)
-	local package
-	local replace
-	# Manage arguments with getopts
-	ynh_handle_getopts_args "$@"
-	replace=${replace:-0}
-
-	local current_dependencies=""
-	if [ $replace -eq 0 ]
-	then
-		local dep_app=${app//_/-}	# Replace all '_' by '-'
-		if ynh_package_is_installed --package="${dep_app}-ynh-deps"
-		then
-			current_dependencies="$(dpkg-query --show --showformat='${Depends}' ${dep_app}-ynh-deps) "
-		fi
-
-		current_dependencies=${current_dependencies// | /|}
-	fi
-
-	ynh_install_app_dependencies "${current_dependencies}${package}"
-}
diff --git a/scripts/ynh_check_ram b/scripts/ynh_check_ram
deleted file mode 100644
index 11012a3..0000000
--- a/scripts/ynh_check_ram
+++ /dev/null
@@ -1,72 +0,0 @@
-#!/bin/bash
-
-# Check the amount of available RAM
-#
-# usage: ynh_check_ram [--required=RAM required in Mb] [--no_swap|--only_swap] [--free_ram]
-# | arg: -r, --required= - Amount of RAM required in Mb. The helper will return 0 is there's enough RAM, or 1 otherwise.
-# If --required isn't set, the helper will print the amount of RAM, in Mb.
-# | arg: -s, --no_swap   - Ignore swap
-# | arg: -o, --only_swap - Ignore real RAM, consider only swap.
-# | arg: -f, --free_ram  - Count only free RAM, not the total amount of RAM available.
-ynh_check_ram () {
-	# Declare an array to define the options of this helper.
-	declare -Ar args_array=( [r]=required= [s]=no_swap [o]=only_swap [f]=free_ram )
-	local required
-	local no_swap
-	local only_swap
-	# Manage arguments with getopts
-	ynh_handle_getopts_args "$@"
-	required=${required:-}
-	no_swap=${no_swap:-0}
-	only_swap=${only_swap:-0}
-
-	local total_ram=$(vmstat --stats --unit M | grep "total memory" | awk '{print $1}')
-	local total_swap=$(vmstat --stats --unit M | grep "total swap" | awk '{print $1}')
-	local total_ram_swap=$(( total_ram + total_swap ))
-
-	local free_ram=$(vmstat --stats --unit M | grep "free memory" | awk '{print $1}')
-	local free_swap=$(vmstat --stats --unit M | grep "free swap" | awk '{print $1}')
-	local free_ram_swap=$(( free_ram + free_swap ))
-
-	# Use the total amount of ram
-	local ram=$total_ram_swap
-	if [ $free_ram -eq 1 ]
-	then
-		# Use the total amount of free ram
-		ram=$free_ram_swap
-		if [ $no_swap -eq 1 ]
-		then
-			# Use only the amount of free ram
-			ram=$free_ram
-		elif [ $only_swap -eq 1 ]
-		then
-			# Use only the amount of free swap
-			ram=$free_swap
-		fi
-	else
-		if [ $no_swap -eq 1 ]
-		then
-			# Use only the amount of free ram
-			ram=$total_ram
-		elif [ $only_swap -eq 1 ]
-		then
-			# Use only the amount of free swap
-			ram=$total_swap
-		fi
-	fi
-
-	if [ -n "$required" ]
-	then
-		# Return 1 if the amount of ram isn't enough.
-		if [ $ram -lt $required ]
-		then
-			return 1
-		else
-			return 0
-		fi
-
-	# If no RAM is required, return the amount of available ram.
-	else
-		echo $ram
-	fi
-}
diff --git a/scripts/ynh_install_ruby__2 b/scripts/ynh_install_ruby__2
index f064c08..df03e07 100644
--- a/scripts/ynh_install_ruby__2
+++ b/scripts/ynh_install_ruby__2
@@ -22,8 +22,8 @@ SOURCE_SUM=80ad89ffe04c0b481503bd375f05c212bbc7d44ef5f5e649e0acdf25eba86736" > "
 
   # Build an app.src for ruby-build
   mkdir -p "../conf"
-  echo "SOURCE_URL=https://github.com/rbenv/ruby-build/archive/v20191004.tar.gz
-SOURCE_SUM=6f053957acb0af6d621ebf2b9dacc9c265844b2dc6842a021eb10f0a70094fe8" > "../conf/ruby-build.src"
+  echo "SOURCE_URL=https://github.com/rbenv/ruby-build/archive/v20200520.tar.gz
+SOURCE_SUM=52be6908a94fbd4a94f5064e8b19d4a3baa4b773269c3884165518d83bcc8922" > "../conf/ruby-build.src"
   # Download and extract ruby-build
   ynh_setup_source "$rbenv_install_dir/plugins/ruby-build" ruby-build
 
@@ -79,7 +79,10 @@ ynh_install_ruby () {
   if ! type rbenv > /dev/null 2>&1
   then
     ynh_install_rbenv
-  elif dpkg --compare-versions "$(/opt/rbenv/bin/rbenv --version | cut -d" " -f2)" lt "1.1.2"
+  elif dpkg --compare-versions "$($rbenv_install_dir/bin/rbenv --version | cut -d" " -f2)" lt "1.1.2"
+  then
+    ynh_install_rbenv
+  elif dpkg --compare-versions "$($rbenv_install_dir/plugins/ruby-build/bin/ruby-build --version | cut -d" " -f2)" lt "20200520"
   then
     ynh_install_rbenv
   fi
@@ -91,7 +94,7 @@ ynh_install_ruby () {
   test -x /usr/bin/ruby_rbenv && mv /usr/bin/ruby_rbenv /usr/bin/ruby
 
   # Install the requested version of ruby
-  CONFIGURE_OPTS="--disable-install-doc" MAKE_OPTS="-j2" rbenv install --skip-existing $ruby_version
+  CONFIGURE_OPTS="--disable-install-doc --with-jemalloc" MAKE_OPTS="-j2" rbenv install --skip-existing $ruby_version
 
   # Store the ID of this app and the version of ruby requested for it
   echo "$YNH_APP_ID:$ruby_version" | tee --append "$rbenv_install_dir/ynh_app_version"