[repack]: Ubuntu Desktop Iso

We tested the method on three Ubuntu versions (20.04, 22.04, 23.04) with three customization levels:

cd ~/iso_workspace/extract-cd sudo rm md5sum.txt find . -type f -not -name "md5sum.txt" -not -path "./isolinux/*" \ -exec md5sum {} \; | sudo tee md5sum.txt ubuntu desktop iso