FROM ruby:2.2.4 ENV RAILS_ENV=production RUN apt-get update -qq && apt-get install -y build-essential libpq-dev && rm -rf /var/lib/apt/lists/* RUN mkdir /mastodon WORKDIR /mastodon ADD Gemfile /mastodon/Gemfile ADD Gemfile.lock /mastodon/Gemfile.lock RUN bundle install --deployment --without test --without development ADD . /mastodon VOLUME ["/mastodon/public/system", "/mastodon/public/assets"]