anchor.diff:      #chromium-chromedriver \
       && rm -rf /var/cache/apk/*
   
  -RUN apk upgrade
  +#RUN apk upgrade
   
   #============
   # GeckoDriver
  
positive.code: FROM ruby:2.5.1-alpine3.7
  
  LABEL author="Andy Perrett"
  
  
negative.code:   && mv geckodriver /usr/bin/geckodriver \
    && chmod 755 /usr/bin/geckodriver  
  
      
  WORKDIR /app
  COPY Gemfile Gemfile.lock /app/
  