docker-compose.yml version: '3' services: backend: build: context: . dockerfile: ./backend/Dockerfile expose: - 5000 ports: - "5000:5000" links: - mongo_db:mongo_db depends_on: - mongo_db #restart: always volumes: - ./backend/flask_app:/usr/src/app command: gunicorn -w 1 -b 0.0.0.0:5000 wsgi:app frontend: build: context: . dockerfile: ./frontend/Dockerfile expose: - 3000 ports: - "3000:3000" vol..