We only needed a simple form, but we wanted to be fancy, so we used "nextcloud forms".
The docker image automatically updated the install to nextcloud 30, but the forms app requires nextcloud 29 or lower. No warning whatsoever. It's an official app, couldn't they wait that it was ready for NC 30 before launching it? The newsletter boasts "NC hub 9 is the best thing after sliced bread" yet i don't see any difference both in visual or performance compared to NC hub 2
Conclusion: we made our business to rely on nextcloud forms as a signup form, but the only reason we were using it was disabled who knows how many weeks ago.
Docker is kind of a giant mess in my experience. The trick to it is creating backup plans to recover your data when it fails. As such, I don't really recommend it to anyone at all.
This is why you have a staging environment and backups for the very rare case where something goes wrong. I've only had to roll back a container maybe 3 times in 5 years at this point and can just roll back to a previous snapshot in a few minutes.
I wouldn't recommend Docker for a production environment either, but there are plenty of container-based solutions that use OCI compatible images just fine and they are very widely used in production. Having said that, plenty of people run docker images in a homelab setting and they work fine. I don't like running rootful containers under a system daemon, but calling it a giant mess doesn't seem fair in my experience.