The `flash.zsh` script now takes an optional `--image-url` argument,
which can be used to specify a different FCOS base image. This could be
to use a custom image or to simply avoid downloading the same image from
the Internet repeatedly.
Although the official Fedora CoreOS documentation only provides
instructions for running CoreOS on a Raspberry Pi 4, it does actually
work on older boards as well. `coreos-installer` creates a GPT disk
label, which the older devices do not support, but this can be worked
around using a hybrid MBR label.
Unfortunately, after I put all the effort into refactoring this script
and adding support for the older devices, I realized that it was rather
pointless as those boards simply do not have enough memory to be useful
Kubernetes nodes. I was hoping to move the Zigbee and ZWave controllers
to a Raspberry Pi 3, but these processes take way too much memory for
that.
Dustin