code: def bundle_lambda(zipfile):
      
      # TODO have 'bundle.zip' as default config
      if not zipfile:
          return 1
      with open('bundle.zip', 'wb') as zfile:
          zfile.write(zipfile)
      log.info('Finished - a bundle.zip is waiting for you...')
      return 0
docs: Write zipfile contents to file.
  
      :param zipfile:
      :return: exit_code