Addition of Keras container

The inclusion of a Keras NGC container would be very useful, due to the high level API used by this library (compared to others like TF, Pytorch, etc.) Alternatively, the ability to access an NGC container’s Dockerfile would be very useful; so that a container can locally be edited to include all of a user’s required libraries with minimal effort.

Thak you for the suggestion regarding Keras. We will include this idea in our planning.