feat: add Docker support for containerized deployment

docker-compose.yml

@@ -0,0 +1,32 @@
+version: '3.8'
+
+services:
+  web:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: diet_recommendation_app
+    ports:
+      - "5000:5000"
+    environment:
+      - FLASK_ENV=production
+      - PYTHONUNBUFFERED=1
+    volumes:
+      # 持久化数据目录
+      - ./data:/app/data
+      - ./logs:/app/logs
+      - ./models:/app/models
+    restart: unless-stopped
+    networks:
+      - app-network
+    healthcheck:
+      test: ["CMD", "python", "-c", "import requests; requests.get('http://localhost:5000/health')"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+
+networks:
+  app-network:
+    driver: bridge
+