behat_headless.yml

default:
  suites: []
  extensions:
    SilverStripe\BehatExtension\MinkExtension:
      default_session: facebook_web_driver
      javascript_session: facebook_web_driver
      facebook_web_driver:
        browser: chrome
        wd_host: "http://127.0.0.1:9515"
        capabilities:
          extra_capabilities:
            chromeOptions:
              args:
                # no sandbox is required to run chromium inside a container https://stackoverflow.com/a/59154049
                - "--no-sandbox"
                # run headless within container - removes the need for xvfb
                - "--headless"
                # disable gpu is often mentioned as fix after headless chrome suddenly breaks after an update
                # leaving it in just in case to prevent hard to diagnose errors later
                - "--disable-gpu"
                # the following options have been used in dev to fix various issues.
                # not sure which ones# are actually required, but it works with thi
                # configuration and these may fix future problems
                #https://stackoverflow.com/a/43840128/1689770
                - "--disable-infobars"
                # https://stackoverflow.com/a/50725918/1689770
                - "--disable-dev-shm-usage"
                # https://stackoverflow.com/a/49123152/1689770
                - "--disable-browser-side-navigation"
                # https://stackoverflow.com/a/55371396/491553
                - "--disable-features=VizDisplayCompositor"
      browser_name: chrome
    SilverStripe\BehatExtension\Extension:
      screenshot_path: '%paths.base%/artifacts/screenshots'
      is_ci: true