Add metadata to the docker container on dockerhub

[spencer-cdw]

It would be nice if the dockerhub landing page provided links back to the github. Currently there is no readme, or links

https://hub.docker.com/r/mitre/saf

How

1. Update the github docker-build-push action to include metadata

https://github.com/marketplace/actions/build-and-push-docker-images

2. Optionally use the dockerhub-description github action https://github.com/peter-evans/dockerhub-description

[aaronlippold]

Please review and close this issue if this is good to go.

[spencer-cdw]

I checked https://hub.docker.com/r/mitre/saf and it still looks blank

To futher clarify what I'm pointing out. If you look at the alpine image, it has

• recent tags
• supported tags
• quick reference
• license
• ect...

https://hub.docker.com/_/alpine