my rails Dockerfile

Dockerfile

FROM kirs/chruby

ENV DEBIAN_FRONTEND noninteractive

EXPOSE 3000

RUN apt-get install -y git-core libmysqlclient-dev python-software-properties
RUN add-apt-repository ppa:chris-lea/node.js
RUN apt-get install -y nodejs

ADD ./myapp /rails
ADD ./database.yml /rails/config/database.yml

WORKDIR /rails

RUN /bin/bash -l -c "bundle install --path vendor/bundle"
RUN /bin/bash -l -c "RAILS_ENV=production bundle exec rake assets:precompile"
ENTRYPOINT /bin/bash -l -c "RAILS_ENV=production bundle exec puma -p 3000"