Enable remote chrome selenium tests for actiontext

Blocks: rails/buildkite-config#33

Previous works: rails#47030, rails#47127

Co-authored-by: Haroon Ahmed <[email protected]>

Author: zzak

actiontext/test/application_system_test_case.rb

@@ -3,7 +3,13 @@
 require "test_helper"
 
 class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
-  driven_by :selenium, using: :headless_chrome
+  options = {
+    browser: ENV["SELENIUM_DRIVER_URL"].blank? ? :chrome : :remote,
+    url: ENV["SELENIUM_DRIVER_URL"].blank? ? nil : ENV["SELENIUM_DRIVER_URL"]
+  }
+  driven_by :selenium, using: :headless_chrome, options: options
 end
 
 Capybara.server = :puma, { Silent: true }
+Capybara.server_host = "0.0.0.0" # bind to all interfaces
+Capybara.app_host = "http://#{IPSocket.getaddress(Socket.gethostname)}" if ENV["SELENIUM_DRIVER_URL"].present?