The APPUiO pruner prunes old builds, deployments and registry images from an OpenShift cluster.
oc new-project appuio-infra
oc new-app https://github.com/appuio/appuio-pruner
oc adm policy add-cluster-role-to-user edit system:serviceaccount:appuio-infra:default
oc adm policy add-cluster-role-to-user system:image-pruner system:serviceaccount:appuio-infra:default