[enh] New backup and restore script adapted to 2.4

scripts/backup

@@ -1,15 +1,20 @@
 #!/bin/bash
-app=ynhexample
+# This backup script is adapted to Yunohost >=2.4
 
-# The parameter $1 is the backup directory location
+# The parameter $1 is the backup directory location dedicated to the app
 # which will be compressed afterward
-backup_dir=$1/apps/$app
-sudo mkdir -p $backup_dir
+backup_dir=$1
+
+# The parameter $2 is theid of the app instance ex: ynhexample__2
+app=$2
 
 # Backup sources & data
-sudo cp -a /var/www/$app/. $backup_dir/sources
+final_path=/var/www/$APP
+sudo cp -a $final_path "${backup_dir}/www" 
 
-# Copy Nginx and YunoHost parameters to make the script "standalone"
-sudo cp -a /etc/yunohost/apps/$app/. $backup_dir/yunohost
+# Copy conf file
+sudo mkdir -p "${backup_dir}/conf"
 domain=$(sudo yunohost app setting $app domain)
-sudo cp -a /etc/nginx/conf.d/$domain.d/$app.conf $backup_dir/nginx.conf
+sudo cp -a /etc/nginx/conf.d/$domain.d/$app.conf "${backup_dir}/conf/nginx.conf"
+
+# Since Yunohost 2.4 no need to backup settings in /etc/yunohost/apps/$app