Upgrade to Docker CE

[seboudry]

Using latest image fabric8/maven-builder: vd8fbad4 on Kubernetes cluster v1.7.15.

Installed version of Docker is too old and can't speak to recent Docker hosts.
For example, I can't managed to pull an image from GCR with credentials generated with Jenkins Docker pipeline.

$ docker run --rm -it -v ~/.docker-gcr/:/root/.docker/ -v /var/run/docker.sock:/var/run/docker.sock fabric8/maven-builder:vd8fbad4 docker pull eu.gcr.io/my-project/my-image
Error response from daemon: unauthorized: You don't have the needed permissions to perform this operation, and you may have invalid credentials. To authenticate your request, follow the steps in: https://cloud.google.com/container-registry/docs/advanced-authentication

But it works with Docker CE installed on CentOS base image :

docker run --rm -it -v ~/.docker-gcr/:/root/.docker/ -v /var/run/docker.sock:/var/run/docker.sock seboudry/maven-builder:docker-ce docker pull eu.gcr.io/my-project/my-image
[...]
Status: Image is up to date for eu.gcr.io/my-project/my-image