This is container for testing ImageIO without oVirt engine running. To fake also oVirt engine you can check fakeovirt.

docker build . --tag machacekondra/imageiotest
docker run -d -p 127.0.0.1:12345:12345 machacekondra/imageiotest
curl -k https://127.0.0.1:12345/images/cirros -o cirros.img
qemu-img check cirros.img