Pin Docker base image in groovy/Dockerfile#7

atomist[bot] wants to merge 1 commit intomastersaturnism/docker-kubernetes-by-example-java:masterfrom

atomist/pin-docker-base-image/groovy/dockerfilesaturnism/docker-kubernetes-by-example-java:atomist/pin-docker-base-image/groovy/dockerfileCopy head branch name to clipboard