feat: 添加Docker配置，集成my_oss图片服务

docker-compose.yml

@@ -0,0 +1,46 @@
+version: '3.8'
+
+services:
+  mysql:
+    image: mysql:10
+    container_name: smalltown_mysql
+    restart: always
+    environment:
+      MYSQL_ROOT_PASSWORD: rootpass
+      MYSQL_DATABASE: smalltown
+      MYSQL_USER: smalltown
+      MYSQL_PASSWORD: MyPassword1+
+    ports:
+      - "3306:3306"
+    volumes:
+      - mysql_data:/var/lib/mysql
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  smalltown:
+    build: .
+    container_name: smalltown_app
+    restart: always
+    ports:
+      - "3000:3000"
+    environment:
+      - NODE_ENV=production
+      - DB_HOST=mysql
+      - DB_PORT=3306
+      - DB_USER=smalltown
+      - DB_PASSWORD=MyPassword1+
+      - DB_NAME=smalltown
+      - OSS_URL=http://myoss:9000
+      - OSS_API_KEY=7cf93760ea49b750c96e6078b364e5f0
+    volumes:
+      - uploads:/app/public/uploads
+    depends_on:
+      mysql:
+        condition: service_healthy
+
+volumes:
+  mysql_data:
+  uploads: