Replace Ubuntu VM with boot2docker.
Setup HOME directory mounting using this [workaround](https://github.com/boot2docker/boot2docker/pull/284).
Uses an forked boot2docker shell script (based on https://github.com/boot2docker/boot2docker/pull/93) but fast forward to the latest master to allow a fixed ip address for guest and host (aka localdocker).
Removed Vagrant, VM is managed by VirtualBox alone.