To avoid having the registry files getting downloaded we must add the registries when the quarkus maven repository is being generated, and let the respective images set both registries with:

 
registries:

• registry.quarkus.redhat.com:
  update-policy: never
• registry.quarkus.io:
  update-policy: never
   
   
  That settings will ensure not having the quarkus-maven-plugin trying to update the registries.
   
  registry.quarkus.redhat.com: is required since we are using the RHBQ
  registry.quarkus.io: to consider the regular io.quarkus extensions and also the quarkiverse ones.