WeBWorK 2.7 is available as a virtual machine image.
The instructions
cover the installation of the Ubuntu Linux 12.04.2LTS 64 bit operating system and WeBWorK 2.7 using the WeBWorK Virtual Machine Image.
The WeBWorK Virtual Machine Image is an .ova file which is an "open, secure, portable, efficient and extensible format for the packaging and distribution of software to be run in virtual machines" (see http://en.wikipedia.org/wiki/Open_Virtualization_Format) and is supported by VMware, VirtualBox, etc. This image file has been tested on VMware Player 5 and VirtualBox 4.