version: '3.8' services: backend: build: context: ./backend dockerfile: Dockerfile ports: - "3000:3000" environment: MONGO_URI: mongodb://mongo:27017/invoice-db JWT_SECRET: "your_jwt_secret" depends_on: - mongo frontend: build: context: ./frontend dockerfile: Dockerfile ports: - "8081:8081" mongo: image: mongo ports: - "27017:27017" volumes: - mongo-data:/data/db volumes: mongo-data: