I’ve had no problems with the normal nextcloud apache container for the last couple years. I lock to a major version and let it update itself on the minors until I feel like like changing the yaml to the next major. I’ve gone from 24 to 30 this way without issue.

Actually, I do have to install the contacts and calendar apps from time to time but that’s only when I want to use the webUI for them, caldav/carddav has always worked.