code: def get_attached_container_host_config_kwargs(self, action, container_name, kwargs=None):
          
          if container_name:
              c_kwargs = {'container': container_name}
          else:
              c_kwargs = {}
          update_kwargs(c_kwargs, kwargs)
          return c_kwargs
docs: Generates keyword arguments for the Docker client to set up the HostConfig or start an attached container.
  
          :param action: Action configuration.
          :type action: ActionConfig
          :param container_name: Container name or id. Set ``None`` when included in kwargs for ``create_container``.
          :type container_name: unicode | str | NoneType
          :param kwargs: Additional keyword arguments to complement or override the configuration-based values.
          :type kwargs: dict | NoneType
          :return: Resulting keyword arguments.
          :rtype: dict