Image names for the runs are currently hard-coded, https://github.com/rancher/tests/blob/main/validation/build.sh#L18, but with shared libraries names, we should be able to update this dynamically.
Just to give an idea of how the container and image name generation would look with these changes: https://github.com/rancher/qa-jenkins-library/pull/1/files#diff-c0c5ca0bac795d9e278ef4d9167345c46d62e0f0722a58c268cc47e35e6a9e68R17-R36