anchor.diff:  
   
   # Download binaries in parallel
  -FROM        ruby:2.5-buster as download
  +FROM        ruby:2.7-buster as download
   LABEL       stage=build
   LABEL       project=avalon
   RUN         curl -L https://github.com/jwilder/dockerize/releases/download/v0.6.1/dockerize-linux-amd64-v0.6.1.tar.gz | tar xvz -C /usr/bin/
  
positive.code: 
  
  # Base stage for building final images
  FROM        ruby:2.5-slim-buster as base
  LABEL       stage=build
  LABEL       project=avalon
  RUN         echo "deb     http://ftp.us.debian.org/debian/    buster main contrib non-free"  >  /etc/apt/sources.list.d/buster.list \
  
negative.code: # Base stage for building gems
  FROM        ruby:2.7-buster as bundle
  LABEL       stage=build
  LABEL       project=avalon
  #RUN     echo "deb http://deb.debian.org/debian buster-backports main" >> /etc/apt/sources.list && \
  