diff --git a/scripts/upgrade b/scripts/upgrade
index d9c815b..8e3091f 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -7,99 +7,45 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-### Settings are automatically loaded as bash variables
-### in every app script context, therefore typically these will exist:
-### - $domain
-### - $path
-### - $language
-### - $install_dir
-### - $port
-### ...
-
-### In the context of upgrade,
-### - resources are automatically provisioned / updated / deleted (depending on existing resources)
-### - a safety backup is automatically created by the core and will be restored if the upgrade fails
-
 #=================================================
 # STOP SYSTEMD SERVICE
 #=================================================
+
 ynh_script_progression "Stopping $app's systemd service..."
 
 ynh_systemctl --service="$app" --action="stop"
 
-#=================================================
-# ENSURE DOWNWARD COMPATIBILITY
-#=================================================
-#ynh_script_progression "Ensuring downward compatibility..."
-
-### N.B. : the following setting migration 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
-# ynh_app_setting_set_default --key=db_name --value="$(ynh_sanitize_dbid --db_name=$app)"
-
-# If install_dir doesn't exist, create it
-# ynh_app_setting_set_default --key=install_dir --value="/var/www/$app"
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
+
 ynh_script_progression "Upgrading source files..."
 
-### ynh_setup_source can wipe the destination dir if called with --full_replace.
-### On upgrade, that is certainly what you want, to remove any old source file that
-### does not exist in the new version of the software.
-### You can list with --keep every file/directory to *not* wipe or overwrite,
-### useful for configuration files, data directories, or plugins.
-# Download, check integrity, uncompress and patch the source from manifest.toml
-ynh_setup_source --dest_dir="$install_dir" --full_replace --keep=".env data"
+ynh_setup_source --dest_dir="$install_dir" --full_replace --keep="database uploads minio"
 
-### $install_dir will automatically be initialized with some decent
-### permissions by default... however, you may need to recursively reapply
-### ownership to all files such as after the ynh_setup_source step
 chown -R "$app:www-data" "$install_dir"
 
-#=================================================
-# UPDATE A CONFIG FILE
-#=================================================
-ynh_script_progression "Updating $app's configuration files..."
-
-### Same as during install
-###
-### The file will automatically be backed-up if it's found to be manually modified (because
-### ynh_config_add keeps track of the file's checksum)
-
-ynh_config_add --template="run.sh" --destination="$install_dir/run.sh"
-
-# FIXME: this should be handled by the core in the future
-### You may need to use chmod 600 instead of 400,
-### for example if the app is expected to be able to modify its own config
-chmod +x "$install_dir/run.sh"
-chmod 400 "$install_dir/run.sh"
-chown "$app:$app" "$install_dir/run.sh"
-
-### For more complex cases where you want to replace stuff using regexes,
-### you shoud rely on ynh_replace (which is basically a wrapper for sed)
-### When doing so, you also need to manually call ynh_store_file_checksum
-###
-### ynh_replace --match="match_string" --replace="replace_string" --file="$install_dir/some_config_file"
-### ynh_store_file_checksum "$install_dir/some_config_file"
 
 #=================================================
 # REAPPLY SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression "Upgrading system configurations related to $app..."
 
-### This should be a literal copypaste of what happened in the install's "System configuration" section
+ynh_script_progression "Upgrading system configurations related to $app..."
 
 ynh_config_add_nginx
 
 ynh_config_add_systemd
 
-yunohost service add "$app" --description="A modern and self-hosted take on file uploading services that can handle anything you throw at it thanks to it's robust and fast API, chunked uploads support and more." --log="/var/log/$app/$app.log"
+yunohost service add "$app" --description="a beautiful and performant vault to save all your files in the cloud" --log="/var/log/$app/$app.log"
 
-ynh_config_add_logrotate
+ynh_script_progression "Installing $app..."
+
+pushd $install_dir
+	ynh_hide_warnings ynh_exec_as_app yarn install
+    ynh_hide_warnings ynh_exec_as_app yarn workspace @chibisafe/backend generate
+    ynh_hide_warnings ynh_exec_as_app yarn workspace @chibisafe/backend migrate
+	ynh_hide_warnings ynh_exec_as_app yarn build
+popd
 
 #=================================================
 # START SYSTEMD SERVICE