Docker image management

[pbaer]

It would be great to have someone with Docker expertise help manage images containing all of the GPU training prerequisites. That would make it easy to spin up training on additional machines without having to tweak all the dependencies to get them just right; people can just pick up an image and use it as a starting point for further work.

See https://github.com/Microsoft/arcticseals/blob/master/src/SealDetectionRCNN/README.MD

This could be of interest:

https://docs.microsoft.com/en-us/azure/container-registry/container-registry-get-started-portal