diff --git a/README.md b/README.md
index 1a16bd2..db42954 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ Shiori is a simple bookmarks manager written in Go language. Intended as a simpl
 
 ## Disclaimers / important information
 
-First connection credentials are:
+The default account is `shiori` with password `gopher`. It is removed once another 'owner' account is created.
 
 - username: `shiori`
 - password: `gopher`
diff --git a/README_fr.md b/README_fr.md
index d46a8b2..58c40b5 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -36,7 +36,7 @@ Shiori is a simple bookmarks manager written in Go language. Intended as a simpl
 
 ## Avertissements / informations importantes
 
-First connection credentials are:
+The default account is `shiori` with password `gopher`. It is removed once another 'owner' account is created.
 
 - username: `shiori`
 - password: `gopher`
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 96ccc0c..d601a3a 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -7,9 +7,10 @@ location / {
   proxy_set_header  X-Forwarded-Proto $scheme;
   proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
   proxy_set_header  X-Forwarded-Host $server_name;
-  proxy_set_header  Connection '';
+  
   proxy_http_version 1.1;
   proxy_set_header Upgrade $http_upgrade;
+  proxy_set_header Connection "upgrade";
 
   # Include SSOWAT user panel.
   include conf.d/yunohost_panel.conf.inc;
diff --git a/conf/systemd.service b/conf/systemd.service
index 2dc65e8..eeb2d71 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -9,8 +9,8 @@ User=__APP__
 Group=__APP__
 WorkingDirectory=__FINALPATH__/
 ExecStart=__FINALPATH__/shiori serve --port __PORT__
-StandardOutput=append:/var/log/__APP__/__APP__.log
-StandardError=inherit
+Restart=always
+Environment="SHIORI_DIR=__DATADIR__"
 
 [Install]
 WantedBy=multi-user.target
diff --git a/doc/DISCLAIMER.md b/doc/DISCLAIMER.md
index a792612..11a57fd 100644
--- a/doc/DISCLAIMER.md
+++ b/doc/DISCLAIMER.md
@@ -1,4 +1,4 @@
-First connection credentials are:
+The default account is `shiori` with password `gopher`. It is removed once another 'owner' account is created.
 
 - username: `shiori`
 - password: `gopher`
diff --git a/scripts/backup b/scripts/backup
index cbcef80..bf59418 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -26,7 +26,7 @@ app=$YNH_APP_INSTANCE_NAME
 
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 domain=$(ynh_app_setting_get --app=$app --key=domain)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP
@@ -59,13 +59,6 @@ ynh_backup --src_path="/etc/logrotate.d/$app"
 
 ynh_backup --src_path="/etc/systemd/system/$app.service"
 
-#=================================================
-# BACKUP THE MYSQL DATABASE
-#=================================================
-ynh_print_info --message="Backing up the MySQL database..."
-
-ynh_mysql_dump_db --database="$db_name" > db.sql
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/install b/scripts/install
index ad2bd8e..4b42d76 100755
--- a/scripts/install
+++ b/scripts/install
@@ -64,16 +64,6 @@ ynh_script_progression --message="Configuring system user..." --weight=1
 # Create a system user
 ynh_system_user_create --username=$app --home_dir="$final_path"
 
-#=================================================
-# CREATE A MYSQL DATABASE
-#=================================================
-ynh_script_progression --message="Creating a MySQL database..." --weight=2
-
-db_name=$(ynh_sanitize_dbid --db_name=$app)
-db_user=$db_name
-ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
@@ -97,14 +87,18 @@ ynh_script_progression --message="Configuring NGINX web server..." --weight=1
 ynh_add_nginx_config
 
 #=================================================
-# ADD A CONFIGURATION
+# CREATE DATA DIRECTORY
 #=================================================
-ynh_script_progression --message="Adding a configuration file..." --weight=1
+ynh_script_progression --message="Creating a data directory..." --weight=1
 
-ynh_add_config --template="../conf/.env" --destination="$final_path/.env"
+datadir=/home/yunohost.app/$app
+ynh_app_setting_set --app=$app --key=datadir --value=$datadir
 
-chmod 400 "$final_path/.env"
-chown $app:$app "$final_path/.env"
+mkdir -p $datadir
+
+chmod 750 "$datadir"
+chmod -R o-rwx "$datadir"
+chown -R $app:www-data "$datadir"
 
 #=================================================
 # SETUP SYSTEMD
@@ -155,8 +149,6 @@ then
 	ynh_permission_update --permission="main" --add="visitors"
 fi
 
-ynh_permission_create --permission="api" --url="/api" --allowed="visitors" --auth_header="false" --show_tile="false" --protected="true"
-
 #=================================================
 # RELOAD NGINX
 #=================================================
diff --git a/scripts/remove b/scripts/remove
index 2a50a54..1501f3e 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -17,9 +17,8 @@ ynh_script_progression --message="Loading installation settings..." --weight=1
 app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 
 #=================================================
 # STANDARD REMOVE
@@ -53,9 +52,9 @@ ynh_secure_remove --file="/var/log/$app"
 ynh_remove_logrotate
 
 #=================================================
-# REMOVE THE MYSQL DATABASE
+# REMOVE DEPENDENCIES
 #=================================================
-ynh_script_progression --message="Removing the MySQL database..." --weight=1
+ynh_script_progression --message="Removing dependencies..." --weight=1
 
 # Remove a database if it exists, along with the associated user
 ynh_mysql_remove_db --db_user=$db_user --db_name=$db_name
@@ -68,6 +67,17 @@ ynh_script_progression --message="Removing app main directory..." --weight=1
 # Remove the app directory securely
 ynh_secure_remove --file="$final_path"
 
+#=================================================
+# REMOVE DATA DIR
+#=================================================
+
+# Remove the data directory if --purge option is used
+if [ "${YNH_APP_PURGE:-0}" -eq 1 ]
+then
+	ynh_script_progression --message="Removing app data directory..." --weight=1
+	ynh_secure_remove --file="$datadir"
+fi
+
 #=================================================
 # REMOVE NGINX CONFIGURATION
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 33835b4..61c4223 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -27,15 +27,14 @@ app=$YNH_APP_INSTANCE_NAME
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 
 #=================================================
 # CHECK IF THE APP CAN BE RESTORED
 #=================================================
 ynh_script_progression --message="Validating restoration parameters..." --weight=1
 
-test ! -d $final_path || ynh_die --message="There is already a directory: $final_path "
+test ! -d $final_path || ynh_die --message="There is already a directory: $final_path"
 
 #=================================================
 # STANDARD RESTORATION STEPS
@@ -67,13 +66,27 @@ chown -R $app:www-data "$final_path"
 chmod +x "$final_path/shiori"
 
 #=================================================
-# RESTORE THE MYSQL DATABASE
+# RESTORE THE DATA DIRECTORY
 #=================================================
-ynh_script_progression --message="Restoring the MySQL database..." --weight=1
+ynh_script_progression --message="Restoring the data directory..." --weight=1
 
-db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
-ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
-ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < ./db.sql
+ynh_restore_file --origin_path="$datadir" --not_mandatory
+
+mkdir -p $datadir
+
+chmod 750 "$datadir"
+chmod -R o-rwx "$datadir"
+chown -R $app:www-data "$datadir"
+
+#=================================================
+# SPECIFIC RESTORATION
+#=================================================
+# REINSTALL DEPENDENCIES
+#=================================================
+ynh_script_progression --message="Reinstalling dependencies..." --weight=1
+
+# Define and install dependencies
+ynh_install_app_dependencies $pkg_dependencies
 
 #=================================================
 # RESTORE SYSTEMD
diff --git a/scripts/upgrade b/scripts/upgrade
index 9e72e70..9b3e58f 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -20,7 +20,8 @@ domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 port=$(ynh_app_setting_get --app=$app --key=port)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+port=$(ynh_app_setting_get --app=$app --key=port)
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 
 #=================================================
 # CHECK VERSION