Yes no staging because it's something used at most by 2 concurrent users, we were ok with 95% reliability (we discovered it was disabled after at least two weeks lol)
Otherwise we would just have signed up to one of the many cloud forms sites at $100/year
Backups daily but it's unthinkable to revert something like nextcloud to a months old one
Subscribed to both newsletter and RSS feed to know about issues (the command to update the docker images isn't automated but manually issued). The maintainer of the forms app is nextcloud itself so any incompatibility should have been written in red bold characters in the blog posts and newsletter.
I wiped a whole drive (luckily it was filled with a redundant backup) with the docker image, as the behavior was (or still is, don't know if it was fixed) to
rm -rf .
and replace with fresh stuff ifocc
isn't found. So in the docker compose I accidentally mistyped the wrong volume as /mnt/disk2 instead of /mnt/disk3 and it erased it