First download alpine-make-vm-image from https://github.com/alpinelinux/alpine-make-vm-image
wget https://raw.githubusercontent.com/alpinelinux/alpine-make-vm-image/v0.4.0/alpine-make-vm-image \
&& echo '5fb3270e0d665e51b908e1755b40e9c9156917c0 alpine-make-vm-image' | sha1sum -c \
|| exit 1
mv alpine-make-vm-image /usr/local/bin/
chmod +x /usr/local/bin/alpine-make-vm-image
Create a new alpine qcow2 image
alpine-make-vm-image --image-format qcow2 --image-size 5G \
--repositories-file repositories \
--packages "$(cat packages)" \
--script-chroot alpine-base.qcow2 -- configure.sh
Import that image into libvirt (https://askubuntu.com/questions/299570/how-do-i-import-a-disk-image-into-libvirt)
# Get the image size
qemu-img info --output json alpine-base.qcow2 | jq -r .[\"virtual-size\"]
# Get the image type
qemu-img info --output json alpine-base.qcow2 | jq -r .format
virsh vol-create-as default alpine-base 5368709120 --format qcow2
virsh vol-upload --pool default --vol alpine-base ./alpine-base.qcow2
rm alpine-base.qcow2
Create a new domain based on the above base image (https://jlk.fjfi.cvut.cz/arch/manpages/man/virt-install.1)
virt-install --name alpine \
--os-variant alpinelinux3.7 \
--memory 512 \
--disk pool=default,size=5,backing_store=$(virsh vol-path --pool default --vol alpine-base),backing_format=qcow2,format=qcow2 \
--import \
--graphics vnc \
--network default,model=virtio \
--noautoconsole