Docker is great, I'll admit that. But is there anything it can do that you can't already do with LXCs?
I mean, the scripting can be a bit more complex, but it is a full-blown OS running incredibly lightly!
Well, AFAIR (as far as i read), LXC are C and python and Docker is go-friendly, so recently they included libcontainer and slowly will remove the piggybacking on LXCs, i feel so, its optional with new release.
http://blog.docker.com/2014/03/docker-0-9-introducing-execut...
So in that case, they will bring along more features too,that will surpass LXCs.Also its the matter of statefulness and statelessness. LXCs are stateful and dockers are stateless so this is a big win here for dockers. Libcontainer brings more dimensions to dockers. So if state is not a concern for you, LXCs are any day great ones to go for.
I'm not an expert of LXC, but the DockerFile is really helpful to create everything you need without messing around with several configuration and files.
And think about the Docker HUB! It's amazing, don't reinvent the wheel!