new_contents: try:
      from urllib import urlretrieve
  except ImportError:
      from urllib.request import urlretrieve
  
  
  def simple_discovery(path, secure=True):
      if secure:
          protocol = 'https'
      else:
          protocol = 'http'
  
      urlretrieve('{protocol}://{path}.aci'.format(path=path,
                                                   protocol=protocol),
                  'image.aci'.format(path=path))
  
subject: Add some sort of simple image discovery