anchor.diff:  # Install pecl extensions
   RUN pecl install \
           mongodb \
  -        xdebug-2.7.0RC2 && \
  +        apcu \
  +        xdebug-2.7.1 && \
       docker-php-ext-enable \
  +        apcu.so \
           mongodb.so \
           xdebug
   
  
positive.code: RUN curl -sS https://getcomposer.org/installer | php -- \
          --filename=composer \
          --install-dir=/usr/local/bin
  RUN composer global require --optimize-autoloader \
          "hirak/prestissimo"
  
  # Prepare application
  
negative.code: 
  # Install vendor
  COPY ./composer.json /repo/composer.json
  RUN composer install --prefer-dist --no-interaction --optimize-autoloader --apcu-autoloader
  
  # Add source-code
  COPY . /repo
  