Example Dockerfile for rails

Dockerfile

FROM ubuntu
MAINTAINER Andrew Wood <andrew.d.wood@gmail.com>

RUN apt-get update -q
RUN apt-get install -qy git curl build-essential libssl-dev sqlite3 libsqlite3-dev nodejs
RUN git clone https://github.com/sstephenson/rbenv.git ~/.rbenv
RUN git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
RUN echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
RUN echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
RUN /bin/bash -c -l 'rbenv install 2.1.0'
RUN /bin/bash -c -l 'rbenv global 2.1.0'
RUN /bin/bash -c -l 'gem install bundler --no-ri --no-rdoc'

ADD . railsdockerapp
WORKDIR railsdockerapp
RUN /bin/bash -c -l 'bundle install'

EXPOSE 80
CMD /bin/bash -c -l 'bundle exec rails server -p 80'