Unattended and customized Ubuntu 18.04 installs

Requirements

Linux system with Virtualbox for install testing.

Getting started

Run build-and-run which will download some extra dependencies, build image and start a Virtualbox machine to test the install process.

Putting the image into usb stick

Assuming usb stick is /dev/sdc and the pre-built image name is install.iso:

sudo dd bs=1M if=install.iso of=/dev/sdc

Ubuntu LTS installer documentation

Note that Ubuntu has two install methods:

1. Ubiquity installer (which is a fairly limited install from a pre-built complete system image).
2. Network install using Debian Installer.

This customized installer is the "Debian installer" flavour. Best place for documentation is Debian docs.