feat: add Docker support for containerized deployment

docker-compose.dev.yml

@@ -0,0 +1,29 @@
+version: '3.8'
+
+services:
+  web:
+    build:
+      context: .
+      dockerfile: Dockerfile.dev
+    container_name: diet_recommendation_app_dev
+    ports:
+      - "5000:5000"
+    environment:
+      - FLASK_ENV=development
+      - FLASK_DEBUG=1
+      - PYTHONUNBUFFERED=1
+    volumes:
+      # 代码热重载
+      - .:/app
+      # 持久化数据
+      - ./data:/app/data
+      - ./logs:/app/logs
+      - ./models:/app/models
+    restart: unless-stopped
+    networks:
+      - app-network
+
+networks:
+  app-network:
+    driver: bridge
+