FROM ruby:2.4 ADD ./ /sinatra-sequel WORKDIR /sinatra-sequel RUN bundle install --jobs=4 --gemfile=/sinatra-sequel/Gemfile --path=/sinatra-sequel/sinatra-sequel/bundle ENV DBTYPE=postgresql EXPOSE 8080 CMD bundle exec unicorn -c config/mri_unicorn.rb -o 0.0.0.0 -p 8080 -E production