code: def get_volumes_for_container(self, container_id, skip_empty_source=True):
          
          logger.info("listing volumes for container '%s'", container_id)
          inspect_output = self.d.inspect_container(container_id)
          volumes = inspect_output['Mounts'] or []
          volume_names = [x['Name'] for x in volumes]
  
          if skip_empty_source:
              # Don't show volumes which are not on the filesystem
              volume_names = [x['Name'] for x in volumes if x['Source'] != ""]
  
          logger.debug("volumes = %s", volume_names)
          return volume_names
docs: get a list of volumes mounter in a container
  
          :param container_id: str
          :param skip_empty_source: bool, don't list volumes which are not created on FS
          :return: list, a list of volume names