I might suggest, for the virtualization folks that are new to containers, an instructional that demonstrates Docker a little better than "hello world" or a bash shell. In my opinion, this is an opportunity for VMware to get the point of Photon across to its non-developer community...
The Docker 10-minute interactive tutorial:
The Docker User Guide:
A fun, classic container to launch (if you're as old as I am:)
#docker run -it jbrunk/zork
Docker Cheat Sheet: