This is part of why I tend to only use images that only build from a small set of well-established base images like scratch, alpine, debian and occasionally ubuntu. Those base images can also be handled in the same way. For any exception, you can always do the same.

A bonus to this is that you no longer have the risks of systems breaking because of Dockerhub or quay.io (which I haven't seen mentioned here yet, btw) being offline.