code: def delete_untagged(collector, **kwargs):
      
      configuration = collector.configuration
      docker_api = configuration["harpoon"].docker_api
      images = docker_api.images()
      found = False
      for image in images:
          if image["RepoTags"] == ["<none>:<none>"]:
              found = True
              image_id = image["Id"]
              log.info("Deleting untagged image\thash=%s", image_id)
              try:
                  docker_api.remove_image(image["Id"])
              except DockerAPIError as error:
                  log.error("Failed to delete image\thash=%s\terror=%s", image_id, error)
  
      if not found:
          log.info("Didn't find any untagged images to delete!")
docs: Find the untagged images and remove them