version: '3.1' services: backend: build: backend ports: - 5000:5000 depends_on: - postgres env_file: - .env.dev restart: always networks: - mynet postgres: image: postgres restart: always env_file: - .env.dev ports: - '5432:5432' networks: - mynet volumes: - pgdata:/var/lib/postgresql/data volumes: pgdata: networks: mynet: