docker-gen

This was a neat question:

https://stackoverflow.com/questions/34594654/nginx-proxy-running-multiple-ports-tied-to-different-virtual-hosts-on-one-conta

Which got me to these two repos:

https://github.com/jwilder/nginx-proxy
https://github.com/jwilder/docker-gen

This is a neat little project.  It looks like you can embed little bits of configuration hotness into a docker container and basically treat this system like a little mini chef implementation.

That is really cool, I'm going to have to look into this more later...