app.json

{
    "buildpacks": [
      {
        "url": "https://github.com/heroku/heroku-buildpack-google-chrome"
      },
      {
        "url": "https://github.com/heroku/heroku-buildpack-chromedriver"
      },
      {
        "url": "https://github.com/heroku/heroku-buildpack-nodejs"
      },
      {
        "url": "https://github.com/heroku/heroku-buildpack-ruby"
      }
    ],
    "addons": [
      "heroku-postgresql"
    ],
    "environments": {
      "test": {
        "env": {
          "LANG": "en_US.UTF-8",
          "NPM_CONFIG_PRODUCTION": "false",
          "RACK_ENV": "test",
          "RAILS_ENV": "test",
          "RAILS_LOG_TO_STDOUT": "enabled",
          "RAILS_SERVE_STATIC_FILES": "enabled"
        },
        "scripts": {
          "test": "bundle exec rake spec:fast"
        }
      },
      "review": {
        "addons": [
          "rediscloud"
        ],
        "scripts": {
          "postdeploy": "rails db:migrate; rails db:seed"
        }
      }
    }
  }