anchor.diff:  RUN bundle exec rake assets:precompile
   RUN rm -rf node_modules
   
  -FROM ruby:2.4.2
  +FROM ruby:2.5.1
   
   RUN mkdir -p /usr/src/app
   WORKDIR /usr/src/app
  
positive.code: FROM ruby:2.4.2 as build
  
  RUN mkdir -p /usr/src/build
  WORKDIR /usr/src/build
  
negative.code: ENV RAILS_SERVE_STATIC_FILES true
  ENV RAILS_LOG_TO_STDOUT true
  
  RUN curl -sL https://deb.nodesource.com/setup_10.x | bash -
  RUN apt-get install -y nodejs
  
  COPY --from=build /usr/src/build .
  