Post-install script for Hetzner's `installimage` that installs `dracut-sshd` to enable remote LUKS unlocking via SSH. Tested with Rocky Linux 10. It should also work with AlmaLinux 10 and possibly earlier releases, but these have not been tested.
## Notes
- The script assumes a setup with LVM on RAID1, but this is not a strict requirement. Other setups may require small changes to the script.
- Replaces NetworkManager with `systemd-networkd` and installs `systemd-resolved`
-`systemd-networkd` is configured to use DHCP on all Ethernet interfaces
- Although NetworkManager would probably also work with the implicitly installed `dracut-network`, we use `systemd-networkd` here because it’s our preferred option.
- Enables EPEL (required for `dracut-sshd` and `systemd-networkd`)