docker-compose.yml

# docker-compose.yml
version: '3.2'

volumes:
  dbdata:
    driver: local

services:
  db:
    image: postgres:11
    environment:
      - PGDATA=/var/lib/postgresql/data/pgdata
      - POSTGRES_USER=rails
      - POSTGRES_PASSWORD=secret123
    volumes:
      - dbdata:/var/lib/postgresql/data/pgdata

  web:
    image: jobsapp
    environment:
      - RAILS_ENV=development
      - RACK_ENV=development
      - POSTGRES_USER=rails
      - POSTGRES_PASSWORD=secret123
      - HUB_URL=http://chrome:4444
    depends_on:
      - db
      - chrome

  cron:
    image: jobsapp
    environment:
      - RAILS_ENV=development
      - RACK_ENV=development
      - POSTGRES_USER=rails
      - POSTGRES_PASSWORD=secret123
    depends_on:
      - db
    command: "/bin/sh -c 'whenever --write-crontab && touch /var/log/cron.log && cron && tail -f /var/log/cron.log'"

  chrome:
    # image: selenium/standalone-chrome:3.142.7-zirconium # this version should match that of the selenium-webdriver gem (see Gemfile)
    image: selenium/standalone-chrome:4.0.0-beta-1-prerelease-20210106
    volumes:
      - /dev/shm:/dev/shm