Zoneminder is a pretty solid setup for IP security cameras, and the zmninja app is really nice too. I had tried it years ago but got back to it recently with some sketchy IP cameras. I just put them in their own VLAN, no Internet access, Zoneminder does motion detection and event recording, and so far I’m quite pleased with it.
No docker images for zoneminder still which is wild.
I use ispy agent dvr at the moment. I used to use Blue Iris.
Zoneminder is packaged in Opensuse which I run. Just deployed and set the database configuration and that was it.