update backupbot label

compose.mariadb.yml

@@ -11,10 +11,9 @@ services:
     image: "mariadb:10.11.2"
     deploy:
       labels:
-          backupbot.backup: "true"
           backupbot.backup.pre-hook: 'mysqldump --single-transaction -u root -p"$$(cat /run/secrets/db_root_password)" gitea > /var/lib/mysql/backup.sql'
-          backupbot.backup.post-hook: "rm -rf /var/lib/mysql/backup.sql"
-          backupbot.backup.path: "/var/lib/mysql/backup.sql"
+          backupbot.backup.volumes.mariadb.path: "backup.sql"
+          backupbot.restore.post-hook: "mariadb -u root -p\"$$(cat /run/secrets/db_root_password)\" gitea < /var/lib/mysql/backup.sql"
     command: |
       mysqld --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci
     environment:
@@ -40,4 +39,3 @@ secrets:
 
 volumes:
   mariadb:
-  internal: