covins docker build does not work with multiple architectures or work with a container registry

[richtong]

We want to be able to do more than a local build of the container and also to support multiple architecture that's is both Intel and M1 mac.

see the pull request PR#1 for a revamp of ./docker that does this. Also revamped the make file to add the ability to build with buildkit for multiple architectures and to push to different registries.