Build Error: unable to pull jboss/base-jdk:8

[jgammon612]

[INFO]
[INFO] --- docker-maven-plugin:0.13.5:build (default-cli) @ swarm-sample ---
[INFO] DOCKER> ... Pulling repository docker.io/jboss/base-jdk
[ERROR] DOCKER> Authentication is required.
[INFO] ------------------------------------------------------------------------
Hoping to get the configuration for resolving this error

[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.758 s
[INFO] Finished at: 2016-03-11T11:24:29-06:00
[INFO] Final Memory: 32M/293M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.jolokia:docker-maven-plugin:0.13.5:build (default-cli) on project swarm-sample: Unable to pull 'jboss/base-jdk:8' -> [Help 1]
[ERROR]

[myfear]

Compare the accompanying blog post:
http://blog.eisele.net/2015/10/wildfly-swarm-jax-rs-microservice-on-docker.html