I don’t think you actually want a custom tree. Looks like you just want to enable password auth via SSH Is that correct?
That is the immediate concern, but in general, it seems when a new tree is built the system runs those post-processing scripts. So the general question is, is there a way for me to either modify or run my own post-processing to prevent or undo post-processing actions.
I’m basing this on the observation when my system upgraded to the latest FCOS version, I got locked out of SSH via password auth.
Perhaps it was caused by something else. I will have to do some additional testing to nail down the cause.