I partition the drive, which adds a new container with a volume that I
call "Restore". With Casper Imaging, I deploy a bare-bones macOS 10.13.3
APFS created with AutoDMG. I configure the Casper Imaging session to add
a local admin account. That worke...
I did a config with just the AutoDMG image with nothing else. I used
that for creating my modified restore partition. Then I had a
configuration with all the apps and enrollment info. Seems like it
worked. The macOS version is 10.13.3.