Automatically size IMAGE partition #1
Description
Ideally this would automatically fill the usb stick. A possible solution would be to grow/create the vFAT partition when booting the USB stick. systemd-growfs does not support live growing so we would have to find a different tool - creating the partition upon first use would also work and be supported by systemd-makefs but this likely leads to a worse UX.
Alternatively for linux users we could suggest flashing the USB stick with systemd-repart to have the partition fill the whole device directly.