The configuration registrySources.insecureRegistries determines the
insecure registries that the OpenShift container runtime can access for builds
and pods. This configuration setting is for accessing the configured registries
without TLS validation which could lead to security breaches and should be
avoided.
Remove any insecureRegistries configured using the following command:
oc patch image.config.openshift.io cluster --type=json -p "[{'op': 'remove', 'path': '/spec/registrySources/insecureRegistries'}]"
For more information, follow
the relevant documentation.