Docker?

I've gotten quite hooked on hosting things via docker on my home server. Mainly because I don't want to have to keep up with competing versions of things. This really started when I was messing with mono and somehow screwed up my home server thanks to trying to upgrade mono. Since then, I've ran all my personal projects in docker containers and couldn't be happier.

So, has anyone else been utilizing docker and in what ways? I'd love to see them add support for multiple users, would make doing some shared server stuff simplier for me.