Fix Docker container backup logic in deployment script

deploy_scripts/deploy_with_backup.sh

@@ -90,29 +90,33 @@ 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 $(docker ps -q --filter "ancestor=mysql") \
-            mysqldump -u"$DB_USER" -p"$DB_PASSWORD" \
-            --single-transaction \
-            --routines \
-            --triggers \
-            --events \
-            --add-drop-database \
-            --create-options \
-            "$DB_NAME" > "$BACKUP_DIR/$BACKUP_FILE"
-        
-        if [ $? -eq 0 ]; then
-            BACKUP_SIZE=$(du -h "$BACKUP_DIR/$BACKUP_FILE" | cut -f1)
-            log_success "Docker容器备份成功！"
-            log_info "📊 备份文件: $BACKUP_FILE"
-            log_info "📏 备份大小: $BACKUP_SIZE"
+        # 查找MySQL容器
+        MYSQL_CONTAINER=$(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 \
+                --triggers \
+                --events \
+                --add-drop-database \
+                --create-options \
+                "$DB_NAME" > "$BACKUP_DIR/$BACKUP_FILE"
+            
+            if [ $? -eq 0 ]; then
+                BACKUP_SIZE=$(du -h "$BACKUP_DIR/$BACKUP_FILE" | cut -f1)
+                log_success "Docker容器备份成功！"
+                log_info "📊 备份文件: $BACKUP_FILE"
+                log_info "📏 备份大小: $BACKUP_SIZE"
+            else
+                log_error "Docker容器备份失败！"
+                exit 1
+            fi
         else
-            log_error "Docker容器备份失败！"
+            log_error "未找到MySQL容器，无法备份数据库！"
             exit 1
         fi
-    else
-        log_error "未找到MySQL容器，无法备份数据库！"
-        exit 1
-    fi
 fi
 
 # 第三步：验证备份文件