全栈 docker compose 编排上移到根目录，简化部署流程

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/gateway/docker-compose.yml

@@ -1,29 +0,0 @@
-version: "3.8"
-
-services:
-  gateway:
-    build:
-      context: .
-      dockerfile: Dockerfile
-    container_name: api-gateway
-    ports:
-      - "80:80"
-      - "443:443"
-    volumes:
-      # 开发环境：挂载配置便于热更新，生产环境应内嵌在镜像中
-      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
-      - ./nginx/conf.d:/etc/nginx/conf.d:ro
-    networks:
-      - default
-      - frontend_asset-helper-network
-    restart: unless-stopped
-    healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost/health"]
-      interval: 30s
-      timeout: 3s
-      start_period: 5s
-      retries: 3
-
-networks:
-  frontend_asset-helper-network:
-    external: true

backend/gateway/nginx/nginx.conf

@@ -44,29 +44,28 @@ http {
     # 连接限制
     limit_conn_zone $binary_remote_addr zone=addr:10m;
 
-    # 上游服务 —— 通过宿主机端口访问各微服务（开发环境）
-    # 生产环境应改为容器名:端口，并确保同网络
+    # 上游服务 —— 通过 Docker 内部 DNS（服务名）访问，统一由根目录 docker-compose 编排
     upstream user_login_account {
         least_conn;
-        server host.docker.internal:20111 max_fails=3 fail_timeout=30s;
+        server user-login-account:8080 max_fails=3 fail_timeout=30s;
         keepalive 32;
     }
 
     upstream user_register_account {
         least_conn;
-        server host.docker.internal:20112 max_fails=3 fail_timeout=30s;
+        server user-register-account:8080 max_fails=3 fail_timeout=30s;
         keepalive 32;
     }
 
     upstream user_login_email {
         least_conn;
-        server host.docker.internal:20113 max_fails=3 fail_timeout=30s;
+        server user-login-email:8080 max_fails=3 fail_timeout=30s;
         keepalive 32;
     }
 
     upstream user_register_email {
         least_conn;
-        server host.docker.internal:20114 max_fails=3 fail_timeout=30s;
+        server user-register-email:8080 max_fails=3 fail_timeout=30s;
         keepalive 32;
     }