Docker | Ruby on Rails + PostgreSQL + Redis

docker-compose.yml

version: '3'
services:
  db:
    image: postgres:latest
    ports:
      - "5432:5432"
  redis:
    image: redis:latest
    ports:
      - "6379:6379"
  web:
    stdin_open: true
    tty: true
    build: .
    command: bundle exec rails s -p 3000 -b '0.0.0.0'
    volumes:
      - .:/myapp
    ports:
      - "3000:3000"
    depends_on:
      - db
      - redis