Obligatory reminder: Don't run docker/podman containers inside lxcs, except you think troubleshooting after updates is fun.
From ProxmoxVE Dokumentation zu lxcs:
It is a well-known problem that docker containers in LXC containers occasionally...
This is not a Docker issue — it's an AppArmor bug. See: https://github.com/opencontainers/runc/issues/4968
The package containerd.io=1.7.28-2 includes a critical vulnerability fix, so downgrading is strongly discouraged.
Be careful when updating Docker on Proxmox LXC machines (as far as I know): when you run apt update&&apt upgrade, among other packages, containerd.io is updated to 1.7.28-2~debian.13~trixie, so if you try to launch your containers, you will get...
Backing up the host is not super difficult, but depends a bit on some of the details of how your system is installed. For a host that uses ZFS as root, I do something along these lines:
#!/bin/bash
# Configure where to store the backup and what...