Docker compose config with node_modules volume mount

docker-compose.yml

version: '3.5'
services:
  web:
    user: ${TEST_USER}
    image: migrosonline/some-component:develop
    build:
      target: develop
    environment:
      NODE_ENV: development
      ENVIRONMENT: local
      JEST_JUNIT_OUTPUT_DIR: "/srv/app/test_reports/junit"
    volumes:
      - ./app:/srv/app
      # Mount a named volume to the node_modules folder. This is a workaround to ensure that we never accidentally
      # mount our local node_modules volume in the container; it allows us to develop both inside and outside of the
      # container without having to worry about conflict (e.g. macOS vs Linux node dependencies). We use a named
      # volume rather than an anonymous volume so we can easily identify the volume, and so that multiple anonymous
      # volumes don't clog up our hard drives.
      - node_modules:/srv/app/node_modules:delegated
    networks:
      - no-internet
    command: npm run test

volumes:
  node_modules:

networks:
  no-internet:
    driver: bridge
    internal: true