ARM64 docker image of releases

[kumichou]

Describe the Feature

When creating new releases, build an arm64 Docker image for those wanting to deploy to AWS arm64 EC2 instances, ECS or K8s clusters instead of building an image locally and deploying that.

[jonmchan]

@kumichou - this is a great suggestion - not sure if there is any support for this at the moment. I personally don't utilize any arm64 images, so I would not even be able to test/support this.

If you're interested in taking a stab at a PR, that would be appreciated. We could use docker buildx and multi-platform option in our GHA build job - https://docs.docker.com/build/ci/github-actions/multi-platform/.