code: def docker_container():
      
      if SETUP_SPLASH:
          dm = DockerManager()
          dm.start_container()
  
      try:
          requests.post(f'{SPLASH_URL}/_gc')
      except requests.exceptions.RequestException:
          pass
  
      yield
docs: Start the Splash server on a Docker container.
      If the container doesn't exist, it is created and named 'splash-detectem'.