fix: 修正 Dockerfile 路径（在 deploy 目录）

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

deploy/docker-compose.prod.yml

@@ -1,13 +1,13 @@
 # X-Server Mobile 生产环境 Docker Compose
 # 位置: server/deploy/docker-compose.prod.yml
-# 项目根目录执行: docker-compose -f deploy/docker-compose.prod.yml up -d
+# 项目根目录执行: docker compose -f deploy/docker-compose.prod.yml up -d
 
 services:
   # PHP 后端服务
   backend:
     build:
       context: ../backend
-      dockerfile: Dockerfile.prod
+      dockerfile: ../deploy/Dockerfile.prod
     container_name: x-server-backend-prod
     restart: unless-stopped
     ports:
@@ -22,7 +22,7 @@ services:
       - DB_PORT=3306
       - DB_DATABASE=xserver
       - DB_USERNAME=xserver
-      - DB_PASSWORD=NsNBSQm4b2b7SzhR
+      - DB_PASSWORD=NsNBSQm4b7SzhR
 
       # Redis 配置（1Panel Redis）
       - REDIS_HOST=1Panel-redis-pxdb