anchor.diff: -FROM alpine:3.7 AS builder
  +FROM alpine:3.8 AS builder
   
   COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
   
  
positive.code:         php7-tokenizer
  
  RUN composer install --no-dev --no-scripts --no-suggest --optimize-autoloader \
   && composer require "daverandom/libdns:^2.0" --no-scripts --no-suggest --optimize-autoloader
  
  COPY ./src /srv/src
  COPY ./res /srv/res
  
negative.code:         php7-iconv \
          php7-mbstring \
          php7-curl \
          php7-ctype \
          php7-opcache \
          php7-sockets \
          php7-openssl
  