anchor.diff:  RUN cmake .
   RUN make install
   
  +RUN bundle config --global frozen 1
  +
   RUN mkdir -p /usr/src/app
  +RUN useradd -m www
  +RUN chown www /usr/src/app
  +USER www
  +
   WORKDIR /usr/src/app
   
   ENV RAILS_ENV $RAILS_ENV
  
positive.code: ENV AWS_SECRET_ACCESS_KEY dummy
  
  COPY Gemfile Gemfile.lock /usr/src/app/
  RUN bundle config --global frozen 1
  RUN bundle install --deployment
  
  COPY package.json yarn.lock /usr/src/app/
  
negative.code: RUN bundle exec rake assets:precompile
  
  EXPOSE 3000
  CMD ["bundle", "exec", "rails", "server", "-p", "$PORT", "-b", "0.0.0.0"]
  