diff --git a/issue_template.md b/issue_template.md
index 4a290c4..afce05a 100644
--- a/issue_template.md
+++ b/issue_template.md
@@ -8,7 +8,7 @@ about: When creating a bug report, please use the following template to provide
 1. *Read this whole template first.*
 2. *Determine if you are on the right place:*
    - *If you were performing an action on the app from the webadmin or the CLI (install, update, backup, restore, change_url...), you are on the right place!*
-   - *Otherwise, the issue may be due to REPLACEBYYOURAPP itself. Refer to its documentation or repository for help.*
+   - *Otherwise, the issue may be due to lxd itself. Refer to its documentation or repository for help.*
    - *When in doubt, post here and we will figure it out together.*
 3. *Delete the italic comments as you write over them below, and remove this guide.*
 --- 
@@ -31,7 +31,7 @@ about: When creating a bug report, please use the following template to provide
 
 - *If you performed a command from the CLI, the command itself is enough. For example:*
     ```sh
-    sudo yunohost app install REPLACEBYYOURAPP
+    sudo yunohost app install lxd
     ```
 - *If you used the webadmin, please perform the equivalent command from the CLI first.*
 - *If the error occurs in your browser, explain what you did:*
diff --git a/manifest.json b/manifest.json
index 8f9947f..33f3207 100644
--- a/manifest.json
+++ b/manifest.json
@@ -7,7 +7,7 @@
     },
     "version": "4.11~ynh1",
     "url": "https://example.com",
-    "license": "free",
+    "license": "Apache-2.0",
     "maintainer": {
         "name": "kay0u",
         "email": "pierre@kayou.io"
diff --git a/scripts/backup b/scripts/backup
index 6ea8892..9ef2d30 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -28,77 +28,34 @@ ynh_print_info --message="Loading installation settings..."
 
 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)
-phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
-
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP
 #=================================================
 ynh_print_info --message="Declaring files to be backed up..."
 
-### N.B. : the following 'ynh_backup' calls are only a *declaration* of what needs
-### to be backuped and not an actual copy of any file. The actual backup that
-### creates and fill the archive with the files happens in the core after this
-### script is called. Hence ynh_backups calls takes basically 0 seconds to run.
-
-#=================================================
-# BACKUP THE APP MAIN DIR
-#=================================================
-
-ynh_backup --src_path="$final_path"
-
-#=================================================
-# BACKUP THE NGINX CONFIGURATION
-#=================================================
-
-ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
-
-#=================================================
-# BACKUP THE PHP-FPM CONFIGURATION
-#=================================================
-
-ynh_backup --src_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
-
-#=================================================
-# BACKUP FAIL2BAN CONFIGURATION
-#=================================================
-
-ynh_backup --src_path="/etc/fail2ban/jail.d/$app.conf"
-ynh_backup --src_path="/etc/fail2ban/filter.d/$app.conf"
-
 #=================================================
 # SPECIFIC BACKUP
-#=================================================
-# BACKUP LOGROTATE
-#=================================================
-
-ynh_backup --src_path="/etc/logrotate.d/$app"
-
 #=================================================
 # BACKUP SYSTEMD
 #=================================================
 
 ynh_backup --src_path="/etc/systemd/system/$app.service"
+ynh_backup --src_path="/etc/systemd/system/$app.socket"
 
 #=================================================
 # BACKUP VARIOUS FILES
 #=================================================
 
-ynh_backup --src_path="/etc/cron.d/$app"
+ynh_backup --src_path="/usr/local/lib/$app/"
 
-ynh_backup --src_path="/etc/$app/"
+ynh_backup --src_path="/usr/local/bin/lxc"
+ynh_backup --src_path="/usr/local/bin/lxd"
+ynh_backup --src_path="/usr/local/bin/lxc-to-lxd"
+ynh_backup --src_path="/usr/local/bin/lxd-p2c"
 
-#=================================================
-# BACKUP THE MYSQL DATABASE
-#=================================================
-ynh_print_info --message="Backing up the MySQL database..."
+ynh_backup --src_path="/etc/dnsmasq.d/lxd"
 
-### (However, things like MySQL dumps *do* take some time to run, though the
-### copy of the generated dump to the archive still happens later)
-
-ynh_mysql_dump_db --database="$db_name" > db.sql
+ynh_backup --src_path="/etc/ld.so.conf.d/$app.conf"
 
 #=================================================
 # END OF SCRIPT
diff --git a/scripts/install b/scripts/install
index de553f9..f3a6ecc 100755
--- a/scripts/install
+++ b/scripts/install
@@ -101,14 +101,6 @@ ynh_system_user_create --username=$app
 
 #=================================================
 # SPECIFIC SETUP
-#=================================================
-# CONFIGURE DNSMASQ
-#=================================================
-
-echo "bind-interfaces
-except-interface=lxdbr0" > /etc/dnsmasq.d/lxd
-systemctl restart dnsmasq
-
 #=================================================
 # SETUP SYSTEMD
 #=================================================
@@ -122,11 +114,19 @@ ynh_add_systemd_config
 # MODIFY A CONFIG FILE
 #=================================================
 
+echo "bind-interfaces
+except-interface=lxdbr0" > /etc/dnsmasq.d/lxd
+systemctl restart dnsmasq
+
+ynh_store_file_checksum --file="/etc/dnsmasq.d/lxd"
+
 echo "/usr/local/lib/$app/" > /etc/ld.so.conf.d/$app.conf
 
+ynh_store_file_checksum --file="/etc/ld.so.conf.d/$app.conf"
+
 ldconfig
 
-echo "root:1000000:65536 # Added by lxd#" | sudo tee -a /etc/subuid /etc/subgid
+echo "root:1000000:65536 # Added by lxd#" | tee -a /etc/subuid /etc/subgid
 
 #=================================================
 # GENERIC FINALIZATION
diff --git a/scripts/remove b/scripts/remove
index 7d066c8..fad2445 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -89,6 +89,12 @@ ynh_script_progression --message="Removing the dedicated system user..." --time
 # Delete a system user
 ynh_system_user_delete --username=$app
 
+#=================================================
+# INFO TO REMOVE CONTAINERS
+#=================================================
+
+ynh_print_warn --message="If you really want to delete all containers and files related to lxd please run \"sudo rm /var/lib/lxd -rf\""
+
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index c334a77..a333ff0 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -28,38 +28,8 @@ ynh_script_progression --message="Loading installation settings..." --time --wei
 
 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=$db_name
-phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
-
-#=================================================
-# CHECK IF THE APP CAN BE RESTORED
-#=================================================
-ynh_script_progression --message="Validating restoration parameters..." --time --weight=1
-
-ynh_webpath_available --domain=$domain --path_url=$path_url \
-	|| ynh_die --message="Path not available: ${domain}${path_url}"
-test ! -d $final_path \
-	|| ynh_die --message="There is already a directory: $final_path "
-
 #=================================================
 # STANDARD RESTORATION STEPS
-#=================================================
-# RESTORE THE NGINX CONFIGURATION
-#=================================================
-
-ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
-
-#=================================================
-# RESTORE THE APP MAIN DIR
-#=================================================
-ynh_script_progression --message="Restoring the app main directory..." --time --weight=1
-
-ynh_restore_file --origin_path="$final_path"
-
 #=================================================
 # RECREATE THE DEDICATED USER
 #=================================================
@@ -69,26 +39,11 @@ ynh_script_progression --message="Recreating the dedicated system user..." --tim
 ynh_system_user_create --username=$app
 
 #=================================================
-# RESTORE USER RIGHTS
+# OPEN A PORT
 #=================================================
+ynh_script_progression --message="Configuring firewall..." --time --weight=1
 
-# Restore permissions on app files
-chown -R root: $final_path
-
-#=================================================
-# RESTORE THE PHP-FPM CONFIGURATION
-#=================================================
-
-ynh_restore_file --origin_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
-
-#=================================================
-# RESTORE FAIL2BAN CONFIGURATION
-#=================================================
-ynh_script_progression --message="Restoring the Fail2Ban configuration..." --time --weight=1
-
-ynh_restore_file "/etc/fail2ban/jail.d/$app.conf"
-ynh_restore_file "/etc/fail2ban/filter.d/$app.conf"
-ynh_systemd_action --action=restart --service_name=fail2ban
+ynh_exec_warn_less yunohost firewall allow --no-upnp Both 67
 
 #=================================================
 # SPECIFIC RESTORATION
@@ -100,21 +55,13 @@ ynh_script_progression --message="Reinstalling dependencies..." --time --weight=
 # Define and install dependencies
 ynh_install_app_dependencies $pkg_dependencies
 
-#=================================================
-# RESTORE THE MYSQL DATABASE
-#=================================================
-ynh_script_progression --message="Restoring the MySQL database..." --time --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
-
 #=================================================
 # RESTORE SYSTEMD
 #=================================================
 ynh_script_progression --message="Restoring the systemd configuration..." --time --weight=1
 
 ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
+ynh_restore_file --origin_path="/etc/systemd/system/$app.socket"
 systemctl enable $app.service --quiet
 
 #=================================================
@@ -122,7 +69,28 @@ systemctl enable $app.service --quiet
 #=================================================
 ynh_script_progression --message="Integrating service in YunoHost..." --time --weight=1
 
-yunohost service add $app --description="A short description of the app" --log="/var/log/$app/$app.log"
+yunohost service add $app --log="/var/log/$app/$app.log" --needs_exposed_ports=67
+
+#=================================================
+# RESTORE VARIOUS FILES
+#=================================================
+
+ynh_restore_file --origin_path="/usr/local/lib/$app/"
+
+ynh_restore_file --origin_path="/usr/local/bin/lxc"
+ynh_restore_file --origin_path="/usr/local/bin/lxd"
+ynh_restore_file --origin_path="/usr/local/bin/lxc-to-lxd"
+ynh_restore_file --origin_path="/usr/local/bin/lxd-p2c"
+
+ynh_restore_file --origin_path="/etc/dnsmasq.d/lxd"
+
+systemctl restart dnsmasq
+
+ynh_restore_file --origin_path="/etc/ld.so.conf.d/$app.conf"
+
+ldconfig
+
+echo "root:1000000:65536 # Added by lxd#" | tee -a /etc/subuid /etc/subgid
 
 #=================================================
 # START SYSTEMD SERVICE
@@ -131,30 +99,6 @@ ynh_script_progression --message="Starting a systemd service..." --time --weight
 
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
 
-#=================================================
-# RESTORE VARIOUS FILES
-#=================================================
-
-ynh_restore_file --origin_path="/etc/cron.d/$app"
-
-ynh_restore_file --origin_path="/etc/$app/"
-
-#=================================================
-# RESTORE THE LOGROTATE CONFIGURATION
-#=================================================
-
-ynh_restore_file --origin_path="/etc/logrotate.d/$app"
-
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-# RELOAD NGINX AND PHP-FPM
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server and PHP-FPM..." --time --weight=1
-
-ynh_systemd_action --service_name=php$phpversion-fpm --action=reload
-ynh_systemd_action --service_name=nginx --action=reload
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index fff0363..04f5545 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -16,68 +16,11 @@ ynh_script_progression --message="Loading installation settings..." --time --wei
 
 app=$YNH_APP_INSTANCE_NAME
 
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-path_url=$(ynh_app_setting_get --app=$app --key=path)
-admin=$(ynh_app_setting_get --app=$app --key=admin)
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-language=$(ynh_app_setting_get --app=$app --key=language)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-
-#=================================================
-# CHECK VERSION
-#=================================================
-
-### This helper will compare the version of the currently installed app and the version of the upstream package.
-### $upgrade_type can have 2 different values
-### - UPGRADE_APP if the upstream app version has changed
-### - UPGRADE_PACKAGE if only the YunoHost package has changed
-### ynh_check_app_version_changed will stop the upgrade if the app is up to date.
-### UPGRADE_APP should be used to upgrade the core app only if there's an upgrade to do.
-upgrade_type=$(ynh_check_app_version_changed)
-
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
 ynh_script_progression --message="Ensuring downward compatibility..." --time --weight=1
 
-#
-# N.B. : the followings setting migrations snippets are provided as *EXAMPLES*
-# of what you may want to do in some cases (e.g. a setting was not defined on
-# some legacy installs and you therefore want to initiaze stuff during upgrade)
-#
-
-# If db_name doesn't exist, create it
-#if [ -z "$db_name" ]; then
-#	db_name=$(ynh_sanitize_dbid --db_name=$app)
-#	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-#fi
-
-# If final_path doesn't exist, create it
-#if [ -z "$final_path" ]; then
-#	final_path=/var/www/$app
-#	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
-#fi
-
-### If nobody installed your app before 4.1,
-### then you may safely remove these lines
-
-# Cleaning legacy permissions
-if ynh_legacy_permissions_exists; then
-	ynh_legacy_permissions_delete_all
-
-	ynh_app_setting_delete --app=$app --key=is_public
-fi
-
-if ! ynh_permission_exists --permission="admin"; then
-	# Create the required permissions
-	ynh_permission_create --permission="admin" --url="/admin" --allowed=$admin
-fi
-
-# Create a permission if needed
-if ! ynh_permission_exists --permission="api"; then
-	ynh_permission_create --permission="api" --url "/api" --allowed="visitors" --show_tile="false" --protected="true"
-fi
-
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================
@@ -86,6 +29,8 @@ ynh_script_progression --message="Backing up the app before upgrading (may take
 # Backup the current version of the app
 ynh_backup_before_upgrade
 ynh_clean_setup () {
+	ynh_secure_remove --file="$go_tmp"
+	ynh_secure_remove --file="$lxd_tmp"
 	# Restore it if the upgrade fails
 	ynh_restore_upgradebackup
 }
@@ -101,26 +46,6 @@ ynh_script_progression --message="Stopping a systemd service..." --time --weight
 
 ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"
 
-#=================================================
-# DOWNLOAD, CHECK AND UNPACK SOURCE
-#=================================================
-
-if [ "$upgrade_type" == "UPGRADE_APP" ]
-then
-	ynh_script_progression --message="Upgrading source files..." --time --weight=1
-
-	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$final_path"
-fi
-
-#=================================================
-# NGINX CONFIGURATION
-#=================================================
-ynh_script_progression --message="Upgrading NGINX web server configuration..." --time --weight=1
-
-# Create a dedicated NGINX config
-ynh_add_nginx_config
-
 #=================================================
 # UPGRADE DEPENDENCIES
 #=================================================
@@ -128,6 +53,47 @@ ynh_script_progression --message="Upgrading dependencies..." --time --weight=1
 
 ynh_install_app_dependencies $pkg_dependencies
 
+ynh_script_progression --message="Setting up source files..." --time --weight=1
+
+# Download, check integrity, uncompress and patch the source from app.src
+go_tmp=$(mktemp -d)
+ynh_setup_source --dest_dir="$go_tmp" --source_id="go.$(ynh_detect_arch)"
+
+export PATH=$go_tmp/bin:$PATH
+
+lxd_tmp=$(mktemp -d)
+ynh_setup_source --dest_dir="$lxd_tmp" --source_id="lxd"
+
+export GOPATH=${lxd_tmp}/_dist
+
+#=================================================
+# BUILD FROM SOURCES
+#=================================================
+ynh_script_progression --message="Building lxd from sources..." --time --weight=1
+
+pushd ${lxd_tmp}
+
+make deps
+export CGO_CFLAGS="-I${GOPATH}/deps/raft/include/ -I${GOPATH}/deps/dqlite/include/"
+export CGO_LDFLAGS="-L${GOPATH}/deps/raft/.libs -L${GOPATH}/deps/dqlite/.libs/"
+export LD_LIBRARY_PATH="${GOPATH}/deps/raft/.libs/:${GOPATH}/deps/dqlite/.libs/"
+export CGO_LDFLAGS_ALLOW="-Wl,-wrap,pthread_create"
+cd $GOPATH/src/github.com/lxc/lxd
+
+# https://github.com/golang/go/issues/31997#issuecomment-782864390
+go env -w GO111MODULE=auto
+
+make
+
+mkdir -p /usr/local/lib/$app
+mkdir -p /var/log/$app
+cp -a ${GOPATH}/deps/{raft,dqlite}/.libs/lib*.so* /usr/local/lib/$app/
+cp ${GOPATH}/bin/{lxc,lxd,lxc-to-lxd,lxd-p2c} /usr/local/bin
+popd
+
+ynh_secure_remove --file="$go_tmp"
+ynh_secure_remove --file="$lxd_tmp"
+
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
@@ -136,87 +102,56 @@ ynh_script_progression --message="Making sure dedicated system user exists..." -
 # Create a dedicated user (if not existing)
 ynh_system_user_create --username=$app
 
-#=================================================
-# PHP-FPM CONFIGURATION
-#=================================================
-ynh_script_progression --message="Upgrading PHP-FPM configuration..." --time --weight=1
-
-# Create a dedicated PHP-FPM config
-ynh_add_fpm_config
-
 #=================================================
 # SPECIFIC UPGRADE
-#=================================================
-# ...
-#=================================================
-
 #=================================================
 # SETUP SYSTEMD
 #=================================================
-ynh_script_progression --message="Upgrading systemd configuration..." --time --weight=1
+ynh_script_progression --message="Configuring a systemd service..." --time --weight=1
 
 # Create a dedicated systemd config
+ynh_add_systemd_socket_config
 ynh_add_systemd_config
 
 #=================================================
 # MODIFY A CONFIG FILE
 #=================================================
 
-### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.
-### And create a backup of this file if the checksum is different. So the file will be backed up if the admin had modified it.
-ynh_backup_if_checksum_is_different --file="$final_path/CONFIG_FILE"
+ynh_backup_if_checksum_is_different --file="/etc/dnsmasq.d/lxd"
 
-ynh_replace_string --match_string="match_string" --replace_string="replace_string" --target_file="$final_path/CONFIG_FILE"
+echo "bind-interfaces
+except-interface=lxdbr0" > /etc/dnsmasq.d/lxd
+systemctl restart dnsmasq
 
-# Recalculate and store the checksum of the file for the next upgrade.
-ynh_store_file_checksum --file="$final_path/CONFIG_FILE"
+ynh_store_file_checksum --file="/etc/dnsmasq.d/lxd"
+
+ynh_backup_if_checksum_is_different --file="/etc/ld.so.conf.d/$app.conf"
+
+echo "/usr/local/lib/$app/" > /etc/ld.so.conf.d/$app.conf
+
+ynh_store_file_checksum --file="/etc/ld.so.conf.d/$app.conf"
+
+ldconfig
+
+echo "root:1000000:65536 # Added by lxd#" | tee -a /etc/subuid /etc/subgid
 
 #=================================================
 # GENERIC FINALIZATION
-#=================================================
-# SECURE FILES AND DIRECTORIES
-#=================================================
-
-# Set permissions on app files
-chown -R root: $final_path
-
-#=================================================
-# SETUP LOGROTATE
-#=================================================
-ynh_script_progression --message="Upgrading logrotate configuration..." --time --weight=1
-
-# Use logrotate to manage app-specific logfile(s)
-ynh_use_logrotate --non-append
-
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
 #=================================================
 ynh_script_progression --message="Integrating service in YunoHost..." --time --weight=1
 
-yunohost service add $app --description="A short description of the app" --log="/var/log/$app/$app.log"
+yunohost service add $app --log="/var/log/$app/$app.log" --needs_exposed_ports=67
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
 ynh_script_progression --message="Starting a systemd service..." --time --weight=1
 
+# Start a systemd service
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
 
-#=================================================
-# UPGRADE FAIL2BAN
-#=================================================
-ynh_script_progression --message="Reconfiguring Fail2Ban..." --time --weight=1
-
-# Create a dedicated Fail2Ban config
-ynh_add_fail2ban_config --logpath="/var/log/nginx/${domain}-error.log" --failregex="Regex to match into the log for a failed login"
-
-#=================================================
-# RELOAD NGINX
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server..." --time --weight=1
-
-ynh_systemd_action --service_name=nginx --action=reload
-
 #=================================================
 # END OF SCRIPT
 #=================================================