spec/support/capybara.rb

capybara.rb

require 'capybara/rspec'
require 'selenium-webdriver'

Capybara.server_host = Socket.ip_address_list.detect{|addr| addr.ipv4_private?}.ip_address

Capybara.register_driver :selenium_chrome_headless do |app|
  opts = { desired_capabilities: :chrome, browser: :remote, url: ENV['SELENIUM_URL'] }
  Capybara::Selenium::Driver.new(app, opts)
end

Capybara.javascript_driver = :selenium_chrome_headless