完善docker部署

docker-compose.yml

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+version: '3.8'
+
+services:
+  # PostgreSQL 数据库
+  postgres:
+    image: postgres:16-alpine
+    container_name: acg_blog_db
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: acg_blog
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./backend/schema.sql:/docker-entrypoint-initdb.d/schema.sql:ro
+    ports:
+      - "5432:5432"
+    networks:
+      - acg_blog_network
+
+  # Redis 缓存
+  redis:
+    image: redis:7-alpine
+    container_name: acg_blog_redis
+    restart: unless-stopped
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis_data:/data
+    networks:
+      - acg_blog_network
+
+  # 后端 API
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: acg_blog_backend
+    restart: unless-stopped
+    environment:
+      - DB_HOST=postgres
+      - DB_PORT=5432
+      - DB_USER=postgres
+      - DB_PASSWORD=postgres
+      - DB_NAME=acg_blog
+      - REDIS_HOST=redis
+      - REDIS_PORT=6379
+      - SECRET_KEY=your-secret-key-change-in-production
+      - DEBUG=false
+    ports:
+      - "8000:8000"
+    depends_on:
+      - postgres
+      - redis
+    networks:
+      - acg_blog_network
+
+  # 前端 Nginx
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    container_name: acg_blog_frontend
+    restart: unless-stopped
+    ports:
+      - "80:80"
+    depends_on:
+      - backend
+    networks:
+      - acg_blog_network
+
+volumes:
+  postgres_data:
+  redis_data:
+
+networks:
+  acg_blog_network:
+    driver: bridge