update backupbot label

compose.telegram.yml

@@ -56,6 +56,15 @@ services:
       test: ["CMD", "pg_isready", "-U", "$POSTGRES_USER" ]
     volumes:
       - telegram-postgres:/var/lib/postgresql/data
+    deploy:
+      labels:
+        backupbot.backup.pre-hook: "/pg_backup.sh backup"
+        backupbot.backup.volumes.telegram-postgres.path: "backup.sql"
+        backupbot.restore.post-hook: '/pg_backup.sh restore'
+    configs:
+        - source: pg_backup
+          target: /pg_backup.sh
+          mode: 0555
 
 configs:
   telegram_bridge_yaml: