Bash shell script tools to manage docker images

1. bootsetup: creates a script to deploy a customisable container.

2. dockerboot.in: template script for customisable container boot script (used by bootsetup).

3. dockerhalt.in: template script for cusomisable container halt script (used by bootsetup).

4. dockerflatten: utilility to save container and place it in specified image repository.

5. dockerexport: utility to export container to specified tar file.