Can the build instructions for the project  be extended to include how to authenticate to the authenticate to the registry.

I had a problem building windup-openshift locally (below).

Failed to execute goal io.fabric8:fabric8-maven-plugin:3.5.28:build
(fabric8) on project windup-web-openshift: Failed to execute the build:
Error while trying to build the image: Unable to pull '
registry.redhat.io/jboss-eap-7/eap73-openjdk8-openshift-rhel7:7.3.0-13'
from registry 'registry.redhat.io' : unable to retrieve auth token: 401
unauthorized

The solution is in
  https://access.redhat.com/RegistryAuthentication Using Authentication,
then authenticate with the docker command