Docker image with multiple repositories

I ran into the case where I had the same docker image id that belonged to multiple repositories.  This came about from doing a docker tag
and then a docker push  to get the image on my remote repo.

Output from: docker images

Trying to run docker rmi b5aba79a8ec6  throws:

Error response from daemon: conflict: unable to delete b5aba79a8ec6 (must be forced) – image is referenced in one or more repositories

To fix this you need to first delete one of them.  Using docker rmi  is the way to go.  I originally was looking for an option under docker tag  since that is the way you add the image to a repository.

So running docker rmi us.gcr.io/deployhub-v81/dh-ms-ui:latest deletes that image/tag combo.

For images that have no tag sbtaylor15/dh-ms-init   <none>  162a3ed52aea  you will need to run

docker images --digests  to get the full digest value.

then run docker rmi <repo>@<digest>  to delete it.

docker rmi sbtaylor15/dh-ms-init@sha256:a240cda2ff2ce26ea4dfd2bf5617539d15ae1d7bacbdc7094ab9006853e62da5

Some more examples from docker documentation.