I'd like to provide a way for people to copy my course materials in the
easiest possible way. At present my export & grading processes rely on some
customization of various tools, mostly emacs-based. So I'm thinking the
easiest thing might be fore me to define a virtual machine, maybe
docker-based, and distribute that.

Is anyone already doing this? I remember maybe John K. saying something
along these lines a year or so ago, but can't find the details right away.
Would love to steal someone else's setup as I currently know nothing about
docker...

Thanks,
Matt