Example configuration to show how to use the git commit hash as the artifact/image version.

Additionally, I prefix the commit hash with the commit timestamp for better human readability ("20160702-152019.7555485").

• mvn package to build the jar, wrap it in a docker image and install the image to the local registry.
• docker-compose up to start the built image locally. the service runs on localhost:8080
• mvn deploy to push the image to the docker registry.