Broadly speaking, Ubuntu Server builds (and indeed, other Debian derivative operating systems) function exactly the same way. You specify a script file to tell the installer what actions to take, in place of a human being selecting options. With Ubuntu Server, this is called a pre-seed file. Let's go through this now, and build one up.
The pre-seed files are very powerful, and there is lots of documentation around—however, they can sometimes appear more complex to the naked eye. Starting with the following lines of code, we set the appropriate locale and keyboard layout for our server:
d-i debian-installer/locale string en_GBd-i console-setup/ask_detect boolean falsed-i keyboard-configuration/xkb-keymap ...
