This image is used to build Oriaks Debian image. It runs debootstrap and performs couple of actions to setup the image the way we need it at Oriaks. The resulting system is quite similar to the official Docker Debian image, but it uses clish as the default shell instead of bash. clish is the command-line interface (CLI) we use with our other images to configure services. The system is saved in an archive, /debian/debian-jessie.tar.xz, which is then used to build the final Debian image.