The buildah strategy consists of using buildahbuildah to build and push a container image, out
of a Dockerfile, so it does expect to find a Dockerfile on the source-code, or alternatively
informed on Build object. As a common spec.builderImage use quay.io/buildah/stable.
To install this strategy, use:
kubectl apply -f samples/buildstrategy/buildah/buildstrategy_buildah_cr.yaml