Updating docker images for gsl

[vsuorant]

This is another attempt to update the docker images.

Susan: I tested this with master. If you can try it with your development branch, that would be much appreciated.

[slovelan]

I was able to build the branch and run it on my laptop. I can't speak to the docker changes, but the rest works.

[vsuorant]

Closing this, as this should go to the development branch first.