I've been looking for a way to integrate docker into my existing workflow. This integration takes nothing away from Docker and just makes Vagrant that much more

I've been looking for a way to integrate docker into my existing workflow. This integration takes nothing away from Docker and just makes Vagrant that much more flexible and valuable to teams already using it and newcomers. Can't wait to run this through its paces. Curious, how is the default "proxy" vm on macs sized?