Update docker integration tests to use golem

Use registry example from golem repository.
Use the golem test runner for the docker integration environment

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)

contrib/docker-integration/Dockerfile

@@ -1,46 +1,7 @@
-FROM debian:jessie
+FROM distribution/golem:0.1
 
 MAINTAINER Docker Distribution Team <distribution@docker.com>
 
-# compile and runtime deps
-# https://github.com/docker/docker/blob/master/project/PACKAGERS.md#runtime-dependencies
-RUN apt-get update && apt-get install -y --no-install-recommends \
-        # For DIND
-        ca-certificates \
-        curl \
-        iptables \
-        procps \
-        e2fsprogs \
-        xz-utils \
-        # For build
-        build-essential \
-        file \
-        git \
-        net-tools \ 
-    && apt-get clean && rm -rf /var/lib/apt/lists/*
+RUN apk add --no-cache git
 
-# Install Docker
-ENV VERSION 1.7.1
-RUN curl -L -o /usr/local/bin/docker https://test.docker.com/builds/Linux/x86_64/docker-${VERSION} \
-    && chmod +x /usr/local/bin/docker
-
-# Install DIND
-RUN curl -L -o /dind https://raw.githubusercontent.com/docker/docker/v1.8.1/hack/dind \
-    && chmod +x /dind
-
-# Install bats
-RUN cd /usr/local/src/ \
-    && git clone https://github.com/sstephenson/bats.git \
-    && cd bats \
-    && ./install.sh /usr/local
-
-# Install docker-compose
-RUN curl -L https://github.com/docker/compose/releases/download/1.3.3/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose \
-    && chmod +x /usr/local/bin/docker-compose
-
-RUN mkdir -p /go/src/github.com/docker/distribution
 WORKDIR /go/src/github.com/docker/distribution/contrib/docker-integration
-
-VOLUME /var/lib/docker
-
-ENTRYPOINT ["/dind"]