code: def _all_tag(self):
          
          all_tag = self.get_conf_value('all')
          if len(all_tag) == 0:
              return False
          else:
              return all_tag[0].lower() == 'true'
docs: Return the all tag of the Glances/Docker configuration file.
  
          # By default, Glances only display running containers
          # Set the following key to True to display all containers
          all=True