Custom installation script for USB-stick

Hi, I would be interested to generate customized ini-files to distribute with the standalone version for use on a USB-stick or without installation in a single directory, using a private key file for authentication. Unfortunately, there seems to be no documentation about the ini-file or how to put together a USB-stick-version for centralized distribution...
I use Linux here, am not fluent with Windows, so a structured "howto" would be grand.

Have you read this documentation?