@flatcar @aral this ☝️ might be relevant to your interests. Still in Alpha - i.e. fully tested but expect rough edges in the user experience. Provisioning is currently a bit clunky, see https://github.com/apricote/flatcar-packer-hcloud/tree/oem-image-prebuilt on how to create a server in HCloud.
Would be awesome if interested folks could pick this up and help smoothing out the UX!