I am looking for an example of using autoyast to build a minimal OpenSuse MicroOS for my own experimentation. Which patterns do I have to use in a autoyast file to be able to install openSuse MicroOS from my pxe server?
Hi and welcome to the Forum 
I would do an initial install and create the autoyast file based on the install…
Or just build your own image…
https://build.opensuse.org/package/show/Virtualization%3AAppliances%3AImages%3AopenSUSE-Tumbleweed/000release-packages%3AMicroOS-release
https://build.opensuse.org/package/show/devel%3Akubic/patterns-microos