Dockerfile with Node.js 0.10.36

[LinusU]

For anyone having trouble running airsonos on node 0.12. This Dockerfile sets up a container with node 0.10.36 which should work with airsonos.

@stephen we should probably have someone test this before merge

Call to action: please help test!

git clone https://github.com/LinusU/airsonos.git
cd airsonos
git checkout docker
docker build -t airsonos .
docker run airsonos

OS support: this currently only works on linux. This is because of how docker works on other platforms. It runs a virtual machine that gets it's own private network with just the server and the virtual machine. This makes avahi/zeroconf/bonjour unavailable...