Dockerfile

# dind-gitlab-ci-runner

FROM ubuntu:14.04
MAINTAINER Andrew Munsell <andrew@wizardapps.net>

# Get rid of the debconf messages
ENV DEBIAN_FRONTEND noninteractive

# Update your packages and install the ones that are needed to compile Ruby
RUN apt-get update -y
RUN apt-get upgrade -y
RUN apt-get install -y curl libxml2-dev libxslt-dev libcurl4-openssl-dev libreadline6-dev libssl-dev patch build-essential zlib1g-dev openssh-server libyaml-dev libicu-dev

# Download Ruby and compile it
RUN mkdir /tmp/ruby
RUN cd /tmp/ruby && curl --silent ftp://ftp.ruby-lang.org/pub/ruby/2.0/ruby-2.0.0-p481.tar.gz | tar xz
RUN cd /tmp/ruby/ruby-2.0.0-p481 && ./configure --disable-install-rdoc && make install

RUN gem install bundler

# Set an utf-8 locale
RUN echo "LC_ALL=\"en_US.UTF-8\"" >> /etc/default/locale
RUN locale-gen en_US.UTF-8
RUN update-locale LANG=en_US.UTF-8

# Prepare a known host file for non-interactive ssh connections
RUN mkdir -p /root/.ssh
RUN touch /root/.ssh/known_hosts

# Install the runner
RUN curl --silent -L https://gitlab.com/gitlab-org/gitlab-ci-runner/repository/archive.tar.gz | tar xz
RUN cd gitlab-ci-runner.git && bundle install --deployment

## Optional dependencies
# Let's start with some basic stuff.
RUN apt-get install -qqy iptables ca-certificates lxc

# Install Docker from Docker Inc. repositories.
RUN apt-get install -qqy apt-transport-https
RUN echo deb https://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list
RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9
RUN apt-get update -qq
RUN apt-get install -qqy lxc-docker
RUN apt-get install -qqy supervisor

# Install the magic wrapper.
ADD wrapdocker /usr/local/bin/wrapdocker
RUN chmod +x /usr/local/bin/wrapdocker

# Must use a volume because AUFS cannot use an AUFS mount as a branch
# https://github.com/jpetazzo/dind#important-warning-about-disk-usage
VOLUME /var/lib/docker

# Setup supervisord which runs wrapdocker and the ci runner
ADD supervisord/wrapdocker.conf /etc/supervisor/conf.d/wrapdocker.conf

WORKDIR /gitlab-ci-runner.git

## When the image is started add the remote server key, set up the runner and run it
CMD ssh-keyscan -H $GITLAB_SERVER_FQDN >> /root/.ssh/known_hosts && \
    service supervisor restart && \
    bundle exec ./bin/setup_and_run