You will need a working OS template to work with this project.

Easy solution create an OS template:
- mount the archlinux installation .iso in a VM
- run `pacstrap /mnt base linux openssh`
- run `ln -s /usr/lib/systemd/system/sshd.service /mnt/etc/systemd/system/multi-user.target.wants/sshd.service`
- run `fsarchiver savedir /tmp/os_template.fsa /mnt`
- download `/tmp/os_template.fsa`
- upload the `os_template.fsa` anywhere so that it can be downloaded with wget

Some notes on the above:
- base and linux are the only packages to run a VM
- you will need sshd to operate the VM, so create the symlink to make it start with the OS
- fsarchiver is very good at preserving OS data
- the initrd will dump that template to the encrypted disk
- the same procedure can be used with any distribution, but we didn't test that yet