How-to rename a multi-arch docker image on Docker Hub

Do for all images:

Pull image by hash:

docker pull <username>/<repo>:<tag>@sha256:<image hash>

docker pull user/multiarch-image:latest@sha256:8356dea58369f566c36494d11a7d7cbbbacfae6b8d130e90979b92516ce348bf

Rename image:

docker tag <image id> <username>/<repo>:<new tag>-<arch>

docker tag 2b537a02e2d9 username/multiarch-image:20210101-amd64

Push renamed image:

docker push <username>/<repo>:<new tag>-<arch>

docker push username/multiarch-image:20210101-amd64

Recombine images:

Create manifest

For every image add another --amend

docker docker manifest create <username>/<repo>:<new tag> --amend <username>/<repo>:<new tag>-<arch#1>

docker docker manifest create username/multiarch-image:20210101 --amend username/multiarch-image:20210101-amd64

Push manifest

docker manifest push <username>/<repo>:<new tag>

docker manifest push username/multiarch-image:20210101