feat: Build docker image for arm64 to support running on macos arm64 docker-desktop

[disaac]

Currently the publishdocker.yml workflow builds only for the runner platform which is linux amd64.

As a feature would like to add a buildx platform argument to have an additional platform targeted for arm64 to support running on macos M1 docker-desktop environments. I have built them locally and tested on arm64 raspberry pi and macos works fine. So will put in a PR to have the workflow build for arm64 as well.