There isn’t a chance that a .22LR would even leave a bruise at 300m, if you managed to deal with the 15 or 20’ of drop at that range. You might as well throw a shoe at him.
Cmon, let’s get these people using the right equipment for the job. Telling people that .22 is going to do the job is just making sure the job doesn’t get done.
The best kill is overkill.
The AIO docker compose container is far better, and I’ve run Nextcloud in pretty much every installation path in the last decade, using baremetal, my own docker, snap, NCPi, and VMs. All of them have had issues with updating, backup and the host going sideways for some reason or another. The AIO has been flawless for far longer than any of them managed.