Docker build for arm64

[ms-ati]

Feature Request

Feature Suggestion

In addition to the wonderful Docker image built for amd64, would it be possible to set it up to also automatically build and publish for arm64?

Context

Running both locally on Mac M1, and remotely in arm64 CI system, is made easier if toolchains have arm64 docker images. The alternative is to make local builds or to forgo the use of the Docker images

[ms-ati]

According to the documentation, is it possible for you to simply build the existing Dockerfile and push it for multiple architectures like this?

 docker buildx build --platform linux/amd64,linux/arm64 -t <username>/<image>:latest --push .