anchor.diff:  RUN php /tmp/composer.phar --install-dir=/usr/local/bin --filename=composer
   
   # Install and configure PHP extensions
  -RUN docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
  +RUN docker-php-ext-configure gd --with-freetype --with-jpeg \
       && docker-php-ext-install -j$(nproc) gd \
       && docker-php-ext-install -j$(nproc) pdo pdo_mysql \
       && docker-php-ext-install -j$(nproc) zip
  
positive.code: FROM php:7.2-fpm
  
  RUN apt-get update
  
  
negative.code:     libxml2-dev \
      locales \
      zlib1g-dev \
      libzip-dev\
      libpng-dev \
      libfreetype6-dev \
      libjpeg62-turbo-dev \
      libjpeg-dev \
      zip \
      nodejs
  