Dockerfile

FROM ubuntu:14.04

MAINTAINER cariandrum22@gmail.com

# Install packages for building ruby
RUN apt-get update
RUN apt-get install -y --force-yes build-essential curl git zlib1g-dev \
    libssl-dev libreadline-dev libyaml-dev libxml2-dev libxslt-dev libffi-dev
RUN apt-get clean

# Create rails user
# TODO # Get password from docker run aurg
RUN useradd -m -s /bin/bash rails
RUN echo 'rails:password' | chpasswd
RUN echo 'rails ALL=(ALL) NOPASSWD:ALL' > /etc/sudoers.d/rails

# Change rails user
USER rails
ENV HOME /home/rails

# Install rbenv and ruby-build
WORKDIR /home/rails
RUN git clone https://github.com/sstephenson/rbenv.git /home/rails/.rbenv
RUN git clone https://github.com/sstephenson/ruby-build.git\
      /home/rails/.rbenv/plugins/ruby-build
ENV PATH ${HOME}/.rbenv/bin:${PATH}
RUN echo 'export PATH=${HOME}/.rbenv/bin:${PATH}' >> ~/.bash_profile
RUN echo 'eval "$(rbenv init -)"' >> ~/.bash_profile

# Install multiple versions of ruby
ENV CONFIGURE_OPTS --disable-install-doc
ADD ./ruby-versions /home/rails/ruby-versions
RUN xargs -L 1 rbenv install < /home/rails/ruby-versions

# Install Bundler for each version of ruby
RUN echo 'gem: --no-rdoc --no-ri' >> /home/rails/.gemrc
RUN bash -l -c 'eval "$(rbenv init -)"; \
      for v in $(cat /home/rails/ruby-versions); \
      do rbenv global $v; gem install bundler; done'

# Create application directory
USER root
RUN mkdir -p /var/app
RUN chown rails:rails /var/app