anchor.diff:  
   ENV RACK_ENV production
   
  -RUN apt-get update \
  -    && apt-get install -y --no-install-recommends \
  -        gcc \
  +RUN apk add --no-cache \
  +        g++ \
           make \
  -    && gem install bundler -v 2.0.2 \
       && bundle config --global frozen true \
  -    && bundle config --global no-cache 'true' \
  -    && bundle config --global without 'development test'
  +    && bundle config --global without "development test"
   
   WORKDIR /usr/src/app
   
  
positive.code: 
  ENV RACK_ENV production
  
  RUN apt-get update \
      && apt-get install -y --no-install-recommends \
          imagemagick \
      && rm -rf /var/lib/apt/lists/*
  
  COPY --from=Build /usr/local/bundle /usr/local/bundle
  COPY --from=Build /usr/src/app /usr/src/app
  
negative.code: FROM ruby:2.7.2-alpine as Ruby
  
  ##################################################
  # Build Stage
  