github.com/rohankumardubey/draft-classic@v0.16.0/packs/ruby/Dockerfile (about) 1 FROM ruby 2 ENV PORT 3000 3 EXPOSE 3000 4 RUN bundle config --global frozen 1 5 6 WORKDIR /usr/src/app 7 8 COPY Gemfile Gemfile.lock ./ 9 RUN bundle install 10 11 COPY . . 12 CMD ["ruby", "app.rb"]