I've been using it quite a bit as the basis for different clones of sites and web services I'm refactoring, and it also came in handy cleaning up the Heartbleed mess.
# apt-get install dkms build-essential linux-headers-$(uname -r)
# apt-get install xorg fluxbox
# apt-get install roxterm git mercurial python-all-dev python-pip python-lxml python-magic python-imaging
[after "Inserting" the Guest Additions CD via the Devices menu]
# mount /dev/dvd /media/cdrom
# cd /media/cdrom
# sh ./VBoxLinuxAdditions.run
As before, I'm using fluxbox as the window manager, though that can be changed or removed as needed.
To install it in your environment:
The password for both root and the sole regular account — averagejoe — is all4one but that can (and should) be changed by using the passwd command after first login.
To bring up the window manager as either user, type startx after logging in successfully.