docker-compose.yml

version: "3"

services:
  postgres:
    image: postgres
    volumes:
      - postgres:/var/lib/postgresql/data
    environment:
      POSTGRES_PASSWORD: qwe123

  app:
    depends_on:
      - "postgres"
    build: .
    command: bundle exec rails s -p 3000 -b '0.0.0.0'
    ports:
      - "3000:3000"
    volumes:
      - .:/app
      - gems:/gems

volumes:
  postgres:
  gems: