install rustdesk server (OSS) on EL9 (RHEL9, Alma9, Rocky9, OL9) via podman quadlet (podman systemd integration) and auto updates (via podman-auto-update.timer)
loginctl enable-linger $USER
systemctl --user enable --now podman-auto-update.timer
systemctl --user cat podman-auto-update.timer
# also make sure these ports are open on your cloud provider's security group/firewall