Install the prerequsites:
- Virtualbox
- Vagrant
- Chef-dk
Then run:
vagrant up
and wait. The download will take quite some time as the box is rather large. The downloads are not resumable as far as I know, so ensure that you have some time before you start.
At the end of the provisioning, you will have a server 2k8 box with chef-client installed and the box will be configured for remote administration.