#!/bin/sh

#
# Prepare a (Debian/Ubuntu) host to build a KVM qcow image from Githubs
# runner-images repo patched for KVM. Run this as root.
# Depending on the resources of your host and download speed, this will take
# between 30 and 120 minutes.
#

HERE="$(pwd)"

# install prerequiste pacakges
apt install cloud-init git qemu-utils qemu-system-x86 tmux unzip

# install packer, 1.9.5 is the latest release still under MPL
if which packer >/dev/null; then
	echo "Packer already installed"
else
	wget https://releases.hashicorp.com/packer/1.9.5/packer_1.9.5_linux_amd64.zip
	unzip packer_1.9.5_linux_amd64.zip
	cp packer /usr/local/bin
	chmod +x /usr/local/bin/packer 
	rm packer packer_*_linux_amd64.zip
fi

# clone repo
git clone -b ubuntu24/20240714.1 https://github.com/fffonion/runner-images-kvm

# run build
cd runner-images-kvm/images/ubuntu/templates
packer init ubuntu-24.04.pkr.hcl
packer build ubuntu-24.04.pkr.hcl
cd ${HERE}
mv runner-images-kvm/images/ubuntu/templates/output-custom_image/ubuntu-24.04 github-runner-image-ubuntu-24.04.qcow2
rm -r runner-images-kvm