diff --git a/scripts/backup b/scripts/backup
index fb3c925..757a874 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -28,8 +28,9 @@ 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)
+port=$(ynh_app_setting_get --app=$app --key=port)
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP
diff --git a/scripts/install b/scripts/install
index 6d4556f..5b5fc9a 100755
--- a/scripts/install
+++ b/scripts/install
@@ -24,11 +24,12 @@ ynh_abort_if_errors
 # RETRIEVE ARGUMENTS FROM THE MANIFEST
 #=================================================
 
+app=$YNH_APP_INSTANCE_NAME
+
 domain=$YNH_APP_ARG_DOMAIN
 path_url="/"
 is_public=$YNH_APP_ARG_IS_PUBLIC
 
-app=$YNH_APP_INSTANCE_NAME
 
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
diff --git a/scripts/restore b/scripts/restore
index 62b370a..b2de830 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -29,6 +29,7 @@ ynh_script_progression --message="Loading installation settings..." --weight=1
 app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
+port=$(ynh_app_setting_get --app=$app --key=port)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 13890c4..e4a5aac 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -17,6 +17,7 @@ ynh_script_progression --message="Loading installation settings..." --weight=1
 app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
+port=$(ynh_app_setting_get --app=$app --key=port)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
@@ -84,6 +85,16 @@ ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 # Install Yarn
 ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 
+#=================================================
+# ADD A CONFIGURATION
+#=================================================
+ynh_script_progression --message="Adding a configuration file..." --weight=1
+
+ynh_add_config --template="../conf/.env.local.example" --destination="$final_path/.env.local"
+
+chmod 400 "$final_path/.env.local"
+chown $app:$app "$final_path/.env.local"
+
 #=================================================
 # NGINX CONFIGURATION
 #=================================================