Is there a life cycle policy for official images

Hi, I was looking into docker hub policies for “unpublishing” images.
I couldn’t find anything in the documentation, so I’d appreciate if anyone can give me a pointer.

Is there any official policy about the life cycle of official images like “Ubuntu” I can link to?
E.g. NPM has a policy that “widely used” packages cannot be deleted (npm Unpublish Policy | npm Docs), nuget doesn’t support deletion (Deleting NuGet Packages from nuget.org | Microsoft Docs)