Packer builder with attached disks ?

_This issue was originally opened by @Boriszn as hashicorp/packer#9004. It was migrated here as a result of the [Packer plugin split](https://github.com/hashicorp/packer/issues/8610#issuecomment-770034737). The original body of the issue is below._

Hey Team.

Could you please help or suggest workaround. I've noticed that packer builders always removes attached disk after image creation.

In our product we are using azure image copy extension which requires this disk to be attached otherwise it will not copy the image and throws error like below:


Also you could please suggest some quick fix in the source code, so I can clone it and use my version of packer.
Or any other option/link etc are welcome. We really need this fix

Many Thanks in advance,
Boris