In order to import the necessary Redhat docker images, you will need to create a free Redhat Developers account here.
Once you have created your Redhat account, you will have the option to create a Service Account
Once you have created the Service Account, you will have the option export service account as an OpenShift secrets object. Follow the instructions on the "OpenShift Secret" tab to import it into your tools namespace
Now you are ready to import the necessary images. For example
# be sure to set reference-policy to 'local'
oc import-image rhel8/nginx-116 --from=registry.redhat.io/rhel8/nginx-116 --confirm --reference-policy='local'