The prerequisites include configuring a local registry mirror for OpenShift images and ensuring a functional OpenShift cluster with administrative privileges. Optionally , if you are using a custom certificate authority (CA), a ConfigMap containing the CA certificate must be configured in the 'openshift-config' namespace under the 'updateservice-registry' key. For example: [archy@helper01 ~]$ oc -n openshift-config get configmap/custom-ca -o yaml apiVersion: v1 kind: ConfigMap metadata: namespace: openshift-config name: custom-ca spec: ca-bundle.crt: | -----BEGIN CERTIFICATE----- ... -----END CERTIFICATE----- updateservice-registry: | -----BEGIN CERTIFICATE----- ... -----END CERTIFICATE----- You can add additional trusted CAs by updating the 'image.config.openshift.io/cluster' resource: [archy@helper01 ~]$ oc patch image.config.openshift.io/cluster -p '{"spec":{"additionalTruste...