Fix Docker container backup logic in deployment script

deploy_scripts/deploy_with_backup.sh

@@ -90,7 +90,11 @@ else
     # 使用Docker容器备份
     if docker ps | grep -q mysql; then
         log_info "使用Docker容器备份数据库..."
-        docker exec $(docker ps -q --filter "ancestor=mysql") \
+        # 查找MySQL容器
+        MYSQL_CONTAINER=$(docker ps -q --filter "ancestor=mysql" --filter "ancestor=mariadb" | head -1)
+        if [ -n "$MYSQL_CONTAINER" ]; then
+            log_info "找到MySQL容器: $MYSQL_CONTAINER"
+            docker exec "$MYSQL_CONTAINER" \
                 mysqldump -u"$DB_USER" -p"$DB_PASSWORD" \
                 --single-transaction \
                 --routines \