policies/kyverno/cluster-policies/3-dep-pod-valid-registry.yaml

apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: deployment-pod-valid-registry
  labels:
    app: kyverno
    owner: jimmy
  annotations:
    policies.kyverno.io/category: Compliance
    policies.kyverno.io/description: Rules to enforce correct image source registry
spec:
  validationFailureAction: enforce
  rules:
  - name: validate-registries
    match:
      resources:
        kinds:
        - Pod
    validate:
      message: "Unknown image registry"
      pattern:
        spec:
          containers:
          - image: "GOOD_REGISTRY/* | VERY_GOOD_REGISTRY/*"