Tools to customize an Ubuntu Live CD. Many parts of this will end up
being version-specific. The host machine must be running systemd,
since the image is executed inside a systemd-nspawn container.
Set up host machine, which must be running a recent systemd:
sudo apt-get install squashfs-tools xorriso isolinux systemd-container iptables
sudo systemctl start systemd-networkd
Choose a config:
Download and extract the original ISO:
Apply customizations, both to the outer ISO and the inner image.
This will also run customizer-inner.sh inside a container:
(Optional) Run and enter a shell in the container, for manual customization:
Build the new ISO:
Boot the ISO in QEMU with a blank HDD, to test and install:
Boot QEMU with the same HDD image as above, to test an "installed" system:
Remove everything but the ISOs: