However, my custom-built kube-bench image is stored in a private registry ( via IBM Container Registry ) so I needed to reference a Kubernetes Secret which I'd previously defined within my K8s cluster.
So far, so good ...
Having defined the Secret, I needed to reference it in the Job description ( job.yaml ) via an imagePullSecrets which I'd added to the YAML: -
- name: mysecret
- name: kube-bench
kubectl apply -f job.yaml