update backupbot label

compose.postgres.yml

@@ -11,10 +11,9 @@ services:
     image: postgres:15.8
     deploy:
       labels:
-          backupbot.backup: "true"
-          backupbot.backup.pre-hook: "PGPASSWORD=$$(cat $${POSTGRES_PASSWORD_FILE}) pg_dump -U $${POSTGRES_USER} $${POSTGRES_DB} > /var/lib/postgresql/data/backup.sql"
-          backupbot.backup.post-hook: "rm -r /var/lib/postgresql/data/backup.sql"
-          backupbot.backup.path: "/var/lib/postgresql/data"
+        backupbot.backup.pre-hook: "/pg_backup.sh backup"
+        backupbot.backup.volumes.db.path: "backup.sql"
+        backupbot.restore.post-hook: '/pg_backup.sh restore'
     environment: 
       - POSTGRES_DB=gitea
       - POSTGRES_USER=gitea
@@ -25,6 +24,10 @@ services:
       - db:/var/lib/postgresql/data
     networks:
       - internal
+    configs:
+        - source: pg_backup
+          target: /pg_backup.sh
+          mode: 0555
 
 secrets:
   db_password:
@@ -33,4 +36,8 @@ secrets:
 
 volumes:
   db:
-  internal:
+
+configs:
+  pg_backup:
+    name: ${STACK_NAME}_pg_backup_${PG_BACKUP_VERSION}
+    file: pg_backup.sh