<!-- Code generated from the comments of the AlicloudImageConfig struct in builder/alicloud/ecs/image_config.go; DO NOT EDIT MANUALLY -->

- `image_name` (string) - The name of the user-defined image, [2, 128] English or Chinese
  characters. It must begin with an uppercase/lowercase letter or a
  Chinese character, and may contain numbers, `_` or `-`. It cannot begin
  with `http://` or `https://`.