anchor.diff:  
   # Install vendor
   COPY ./composer.json /repo/composer.json
  -RUN composer install --prefer-dist --optimize-autoloader
  +RUN composer install --prefer-dist --no-interaction --optimize-autoloader --classmap-authoritative
   
   # Add source-code
   COPY . /repo
  
positive.code: FROM php:7.2-cli
  
  MAINTAINER Tobias Munk tobias@diemeisterei.de
  
  
negative.code: # Install pecl extensions
  RUN pecl install \
          mongodb \
          xdebug-2.7.0RC2 && \
      docker-php-ext-enable \
          mongodb.so \
          xdebug
  