Does

/oem/90_custom.yaml

work to auto join a cluster? I'm trying to make a harvester image and pre-populated that file before rebooting the server, but the installer still opens up on first boot and makes me go through the config screens. The base image so far is just whatever "Install harvester binaries" does, it hasn't been joined to a cluster before

you can drop the node join / create info via a userdata.yaml in the /oem directly