anchor.diff:          && docker-php-ext-install gd \
           && docker-php-ext-install mbstring \
           && docker-php-ext-install pdo_mysql \
  -        && docker-php-ext-install opcache
  +        && docker-php-ext-install opcache \
  +        && docker-php-ext-install bcmath
   
   RUN apk add --no-cache --virtual .phpize-deps $PHPIZE_DEPS linux-headers
   
  
positive.code: FROM php:fpm-alpine
  
  MAINTAINER HyanCat <hyancat@live.cn>
  
  
negative.code:         libpng-dev \
          jpeg-dev \
          zlib-dev \
          libzip \
          libzip-dev \
          libxml2 \
          imagemagick \
          imagemagick-dev \
  