Add a built-from-source linux `buildah` into this directory.
docker build --tag ocf-knative-build-s2i .
Then you can attempt to run it:
docker -v /path/to/my/sources:/workspace ocf-knative-build-s2i bucharestgold/centos7-s2i-nodejs
Currently results in an error not unlike:
error running subprocess: error masking non-directory "/tmp/buildah037640502/mnt/rootfs/proc/keys" in mount namespace: permission denied