install docker in onboarding synchronizer container
diff --git a/containers/onboarding_synchronizer/Dockerfile b/containers/onboarding_synchronizer/Dockerfile
index 77d979b..35d58db 100644
--- a/containers/onboarding_synchronizer/Dockerfile
+++ b/containers/onboarding_synchronizer/Dockerfile
@@ -1,6 +1,24 @@
FROM xosproject/xos-synchronizer-openstack
-RUN bash -c "which docker > /dev/null || wget -qO- https://get.docker.com/ | sh"
-# | sh usermod -aG docker root"
+# Install docker-in-docker (dind). See https://hub.docker.com/_/docker/. The docker git repo
+# currently only has 1.10 and 1.11, but it's possible to get the dockerfiles for earlier
+# versions by using:
+# docker pull centurylink/dockerfile-from-image
+# alias dfimage="docker run -v /var/run/docker.sock:/var/run/docker.sock --rm centurylink/dockerfile-from-image"
+# dgimage <name of image>
+
+# This container must be started in privileged mode.
+
+RUN apt-get install -y curl iptables
+ENV DOCKER_BUCKET=get.docker.com
+ENV DOCKER_VERSION=1.8.3
+ENV DOCKER_SHA256=f024bc65c45a3778cf07213d26016075e8172de8f6e4b5702bedde06c241650f
+RUN curl -fSL "https://${DOCKER_BUCKET}/builds/Linux/x86_64/docker-$DOCKER_VERSION" -o /usr/local/bin/docker && echo "${DOCKER_SHA256} /usr/local/bin/docker" | sha256sum -c - && chmod +x /usr/local/bin/docker
+ENV DIND_COMMIT=3b5fac462d21ca164b3778647420016315289034
+RUN wget "https://raw.githubusercontent.com/docker/docker/${DIND_COMMIT}/hack/dind" -O /usr/local/bin/dind && chmod +x /usr/local/bin/dind
+COPY start-dockerd.sh /usr/local/bin/
+VOLUME /var/lib/docker
+EXPOSE 2375
+ENTRYPOINT ["start-dockerd.sh"]
CMD update-ca-certificates && /usr/bin/supervisord -c /etc/supervisor/conf.d/synchronizer.conf