anchor.diff:  # Ruby
   #############
   
  -FROM ubuntu:xenial as ruby_tools_context
  +FROM ubuntu:bionic as ruby_tools_context
   
   # Pinned versions of stuff we pull in
   ENV AWESOMEBOT_VERSION=1.19.1
  
positive.code: # Nodejs
  #############
  
  FROM ubuntu:xenial as nodejs_tools_context
  
  # Pinned versions of stuff we pull in
  ENV BABEL_CLI_VERSION=v7.6.2
  
negative.code: # Python
  #############
  
  FROM ubuntu:bionic as python_context
  
  # Pinned versions of stuff we pull in
  ENV AUTOPEP8_VERSION=1.4.4
  