Dockerized Feature specs

docker_tests.rb

begin
  # build Docker image
  `docker build -t app .`
  #
  # # delete old docker containers
  `docker rm (docker ps -a -q)`

  # gather all the feature specs
  RAILS_ROOT = File.expand_path('../..', __FILE__)
  feature_specs = Dir[File.join(RAILS_ROOT, 'spec/features/**/*.rb')]

  # run a feature spec in a daemonized container
  feature_specs.each do |feature_test|
    filename = File.basename(feature_test, ".rb")
    `docker run -d --name=#{filename} app phantomjs & bundle exec #{feature_test}`
  end
rescue Exception => e
  puts "OH NO YOU DID SOMETHING HORRIBLY WRONG"
end