cheatsheets/docker-compose.yml

version: '3'
services:
  web:
    build: .
    volumes:
      - .:/app
      - rubygems:/usr/local/bundle
    ports:
      - '4001:4001'
      - '35729:35729'
    command: 'env PORT=4001 HOST=0.0.0.0 yarn run dev'

volumes:
  rubygems: