Dockerfile

# Pull base image.
FROM dockerfile/ubuntu

# Install MongoDB.
RUN \
  apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10 && \
    echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' > /etc/apt/sources.list.d/mongodb.list && \
      apt-get update && \
        apt-get install -y mongodb-org && \
          rm -rf /var/lib/apt/lists/*

# Define mountable directories.
VOLUME ["/data/db"]

# Define working directory.
WORKDIR /data

# Define default command.
CMD ["mongod"]

# Expose ports.
#   - 27017: process
#   - 28017: http
EXPOSE 27017
EXPOSE 28017

# Install Ruby.
RUN \
  apt-get update && \
    apt-get install -y ruby ruby-dev ruby-bundler && \
      rm -rf /var/lib/apt/lists/*

# Define working directory.
WORKDIR /data

# Define default command.
CMD ["bash"]

# Next: Git, bundle
RUN \
apt-get install git && apt-get install bundler

# Next: Volt
RUN \
gem install volt \
volt new appname \
cd appname \
bundle