feat: 初始化后端微服务架构骨架

backend/docker-compose.dev.yml

@@ -0,0 +1,64 @@
+version: '3.8'
+
+services:
+  # Nginx 网关
+  nginx:
+    image: nginx:1.25-alpine
+    ports:
+      - "8080:80"
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf:ro
+    depends_on:
+      - gateway
+
+  # 网关服务
+  gateway:
+    build:
+      context: ./gateway
+      dockerfile: Dockerfile
+    ports:
+      - "8000:8000"
+    volumes:
+      - ./gateway:/app
+    command: air -c .air.toml
+    depends_on:
+      - user-svc
+      - redis
+
+  # 用户服务
+  user-svc:
+    build:
+      context: ./services/user-svc
+      dockerfile: Dockerfile
+    ports:
+      - "9000:9000"
+    volumes:
+      - ./services/user-svc:/app
+    command: air -c .air.toml
+    depends_on:
+      - postgres
+
+  # 数据库
+  postgres:
+    image: postgres:18.3-alpine3.23
+    environment:
+      POSTGRES_USER: admin
+      POSTGRES_PASSWORD: password
+      POSTGRES_DB: backend
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+      - ./services/user-svc/migrations:/docker-entrypoint-initdb.d
+
+  # Redis
+  redis:
+    image: redis:8.6.2-alpine
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis-data:/var/lib/redis/data
+
+volumes:
+  postgres-data:
+  redis-data: