FROM alpine:3.3

# https://github.com/docker/docker/blob/master/project/PACKAGERS.md#runtime-dependencies
RUN apk add --no-cache \
	btrfs-progs \
	ca-certificates \
	curl \
	e2fsprogs \
	e2fsprogs-extra \
	iptables \
	xfsprogs \
	xz

ENV DOCKER_BUCKET get.docker.com
ENV DOCKER_VERSION 1.11.1
ENV DOCKER_SHA256 893e3c6e89c0cd2c5f1e51ea41bc2dd97f5e791fcfa3cee28445df277836339d

RUN set -x \
	&& curl -fSL "https://${DOCKER_BUCKET}/builds/Linux/x86_64/docker-$DOCKER_VERSION.tgz" -o docker.tgz \
	&& echo "${DOCKER_SHA256} *docker.tgz" | sha256sum -c - \
	&& tar -xzvf docker.tgz \
	&& mv docker/* /usr/local/bin/ \
	&& rmdir docker \
	&& rm docker.tgz \
	&& docker -v

# we need adduser/useradd for userns
RUN apk add --no-cache \
	--repository http://dl-3.alpinelinux.org/alpine/edge/community/ \
	shadow

ENV DIND_COMMIT 3b5fac462d21ca164b3778647420016315289034

RUN wget "https://raw.githubusercontent.com/docker/docker/${DIND_COMMIT}/hack/dind" -O /usr/local/bin/dind \
	&& sed -i.bak 's/#!\/bin\/bash/#!\/bin\/sh/' /usr/local/bin/dind \
	&& rm -rf /usr/local/bin/*.bak \
	&& chmod +x /usr/local/bin/dind

RUN touch /etc/subuid \
	&& touch /etc/subgid

EXPOSE 2375

COPY config /etc/docker/daemon/config
WORKDIR /etc/docker/daemon/config

ENTRYPOINT ["./setup_certs.sh"]