Things have been cleaned up a little bit now that the workshop is over. There's really aren't any functional changes to the VM itself, but it now contains the complete git repo including the slides and exercises. You no longer have to do a git pull immediately after loading the VM so an external network connection isn't required. I will continue trying to update the material if I get feedback, though, so if you have a connection doing a git pull isn't going to hurt. In the worst case it will just tell you you're already up to date in a few seconds.