Dockerfile

docker-compose.yml

version: '3.1' 
services: 
  db: 
    image: postgres 
    environment: 
      - POSTGRES_USER=postgres 
      - POSTGRES_PASSWORD= 
    ports: 
      - '5432'
  web:
    build: . 
    command: bundle exec rails s -p 3000 -b '0.0.0.0' 
    volumes:
      - .:/ticketee 
    ports:
      - "3000:3000" 
    depends_on: 
      - db

Dockerfile

FROM ruby:2.3.1 
RUN apt-get update -yqq \ 
  && apt-get install -yqq --no-install-recommends \ 
    postgresql-client \ 
    nodejs \ 
    qt5-default \ 
    libqt5webkit5-dev \ 
  && apt-get -q clean \ 
  && rm -rf /var/lib/apt/lists

# for nokogiri
RUN apt-get -qq update && apt-get install -yqq libxml2-dev libxslt1-dev

# for capybara-webkit
RUN apt-get -qq update && apt-get install -yqq libqt4-webkit libqt4-dev xvfb

RUN apt-get install -yqq qt5-default qttools5-dev-tools

WORKDIR /ticketee 
COPY Gemfile* ./ 
RUN bundle install 
COPY . .

rails_helper.rb

require 'spec_helper'
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'rspec/rails'
require 'faker'
require 'pry'
require 'pundit/rspec'
# require 'selenium-webdriver'

Dir[Rails.root.join('spec/support/**/*.rb')].each { |file| require file }
ActiveRecord::Migration.maintain_test_schema!

# if ENV['SELENIUM_REMOTE_HOST']
#   Capybara.javascript_driver = :selenium_remote_firefox
#   Capybara.register_driver "selenium_remote_firefox".to_sym do |app|
#     Capybara::Selenium::Driver.new(
#       app,
#       browser: :remote,
#       url: "http://#{ENV['SELENIUM_REMOTE_HOST']}:#{ENV['SELENIUM_REMOTE_PORT']}/wd/hub",
#       desired_capabilities: :firefox)
#   end
# end

Capybara.javascript_driver = :webkit

RSpec.configure do |config|
  
  config.fixture_path = "#{::Rails.root}/spec/fixtures"
  config.use_transactional_fixtures = false
  config.infer_spec_type_from_file_location!
  config.filter_rails_from_backtrace!
  config.include FactoryBot::Syntax::Methods
  config.include Warden::Test::Helpers, type: :feature
  config.include Devise::Test::ControllerHelpers, type: :controller
  config.after(type: :feature) { Warden.test_reset! }

  # SELENIUM DOCKER
  # config.before(:each) do
  #   if /selenium_remote/.match Capybara.current_driver.to_s
  #     ip = `/sbin/ip route|awk '/scope/ { print $9 }'`
  #     ip = ip.gsub "\n", ""
  #     Capybara.server_port = "3000"
  #     Capybara.server_host = ip
  #     Capybara.app_host = "http://#{Capybara.current_session.server.host}:#{Capybara.current_session.server.port}"
  #   end
  # end

  # config.after(:each) do
  #   Capybara.reset_sessions!
  #   Capybara.use_default_driver
  #   Capybara.app_host = nil
  # end

end