This patch provides my adjusted image as part of the GitOps Repository
CI. The image was patched to listen on an unprivileged port by default.
It patches the go code, since the providing the configfile is untrivial
to provide as configmap and environment variables are no option.

Otherwise the Earthfile reproduces the upstream Dockerfile.

References:
https://gitlab.com/Nulide/findmydeviceserver/-/blob/210898cbe631663cf42cbb1f05fd09384913a6aa/Dockerfile
https://www.w3.org/Daemon/User/Installation/PrivilegedPorts.html

This patch drops the kOS setup entirely, since it has been around for
months now, but seems to be impractical as I still didn't bother to put
it in production. Apparently the usage of Fedora Server with the
existing automatic update mechanisms has proven suffient for now.

This patch re-unifies the build pipelines for images including kOS to use
a central CI definition instead of a specific one for kOS.