code: def main() -> int:
      
      # We need to be in the same directory than the script so the commands in the dockerfiles work as
      # expected. But the script can be invoked from a different path
      base = os.path.split(os.path.realpath(__file__))[0]
      os.chdir(base)
  
      logging.getLogger().setLevel(logging.DEBUG)
      logging.getLogger('botocore').setLevel(logging.INFO)
      logging.getLogger('boto3').setLevel(logging.INFO)
      logging.getLogger('urllib3').setLevel(logging.INFO)
      logging.getLogger('s3transfer').setLevel(logging.INFO)
  
      def script_name() -> str:
          return os.path.split(sys.argv[0])[1]
  
      logging.basicConfig(format='{}: %(asctime)-15s %(message)s'.format(script_name()))
  
      parser = argparse.ArgumentParser(description="Utility for preserving and loading Docker cache", epilog="")
      parser.add_argument("--docker-registry",
                          help="Docker hub registry name",
                          type=str,
                          required=True)
  
      args = parser.parse_args()
  
      platforms = build_util.get_platforms()
      try:
          _login_dockerhub()
          return build_save_containers(platforms=platforms, registry=args.docker_registry, load_cache=True)
      finally:
          _logout_dockerhub()
docs: Utility to create and publish the Docker cache to Docker Hub
      :return: