https://community.hetzner.com/tutorials/install-ubuntu-2004-with-full-disk-encryption
vi /tmp/authorized_keys
vi /tmp/setup.conf
CRYPTPASSWORD xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
DRIVE1 /dev/nvme1n1
DRIVE2 /dev/nvme0n1
SWRAID 1
SWRAIDLEVEL 1
BOOTLOADER grub
HOSTNAME hostname-name
PART /boot ext4 1G
PART /boot/efi esp 512M
PART / ext4 all crypt
IMAGE /root/images/Ubuntu-2204-jammy-amd64-base.tar.gz
SSHKEYS_URL /tmp/authorized_keys
vi /tmp/post-install.sh
chmod +x /tmp/post-install.sh
installimage -a -c /tmp/setup.conf -x /tmp/post-install.sh