diff --git a/scripts/change_url b/scripts/change_url
index ff06606..ca9c1e1 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -29,6 +29,10 @@ ynh_script_progression --message="Loading installation settings..." --weight=1
 # Needed for helper "ynh_add_nginx_config"
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
+db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+db_user=$db_name
+db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
+
 #=================================================
 # BACKUP BEFORE CHANGE URL THEN ACTIVE TRAP
 #=================================================
@@ -91,6 +95,19 @@ then
 	ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
 fi
 
+#=================================================
+# ADD A CONFIGURATION
+#=================================================
+ynh_script_progression --message="Adding a configuration file..." --weight=1
+
+domain=$new_domain
+path=$new_path
+key=$(ynh_app_setting_get --app=$app --key=key)
+ynh_add_config --template="../conf/.env.example" --destination="$final_path/.env"
+
+chmod 400 "$final_path/.env"
+chown $app:$app "$final_path/.env"
+
 #=================================================
 # RELOAD NGINX
 #=================================================
diff --git a/scripts/install b/scripts/install
index e64e3f2..3abcf87 100755
--- a/scripts/install
+++ b/scripts/install
@@ -49,6 +49,7 @@ ynh_script_progression --message="Storing installation settings..." --weight=1
 
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=path --value=$path_url
+ynh_app_setting_set --app=$app --key=key --value=$key
 
 #=================================================
 # CREATE DEDICATED USER
diff --git a/scripts/upgrade b/scripts/upgrade
index cfc21e5..397edbb 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -41,23 +41,6 @@ ynh_clean_setup () {
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
-#=================================================
-# ENSURE DOWNWARD COMPATIBILITY
-#=================================================
-ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
-
-# 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
-
 #=================================================
 # CREATE DEDICATED USER
 #=================================================