My docker containers are stopping constantly.

Most likely low memory, linux systems when there are out of memory calls the OOM killer, which kills the largest processes running on the system. https://unix.stackexchange.com/questions/153585/how-does-the-oom-killer-decide-which-process-to-kill-first

You can probably find evidence of this in the system logs, on most modern systems, this should show you higher prio logs from last boot: journalctl -p 4 -b

You should see something like this, if it was killed by OOM killer

MESSAGE=Killed process 3029 (Web Content) total-vm:10206696kB, anon-rss:6584572kB, file-rss:0kB, shm em-rss:8732kB

And you should definitely think about extending the memory of the system or reducing the number of containers/they memory footprint.

Really not enough information to go on here. I'm not familiar with unraid, but can you add restart: always to the compose file for these containers? Does it have a compose file?

If you're sure it's not a memory issue (and it would be a bit odd for the OOM-kill to kill a bunch of containers like this), it could be an IO issue. A hard drive dying, maybe, but I think unraid should let you know about that?

always put limits on containers !

i.e.

 version: '2.2'

    
services:
    qbittorrent:
        container_name: qbittorrent
        cpus: 1
        mem_limit: 1g
        environment:

  

Maybe memory limits of some kind ? you can set the maxium memory usage in a docker compose file for example!