Bio-Linux is a project to make Linux systems for biological scientists.
http://environmentalomics.org/bio-linux
There are various threads to the project, but the headline product is the Bio-Linux ISO image which can be used to make a bootable DVD or a USB stick.
If you wanted to recreate the ISO yourself, here are the files you need. Note that the process is mostly automated but not fully automated, and the material here is not intended for end users so don't expect it all to just work. See ./build_process_14.04.5.txt
If you want to also make the OVA version of Bio-Linux you first need the ISO file and then see the environmentalomics/iso-to-image repository on GitHub for the next bit. This has not yet been tested with the 14.04.5 point release (BL8.0.8).
Unless otherwise stated all code is Copyright (c) NERC 2004-2015 and is Free Software, see LICENSE.txt.