anchor.diff:  	&& apt-get install -y \
   	libbz2-dev \
   	zlib1g-dev \
  -	&& docker-php-ext-install \
  +	&& docker-php-ext-install -j$(nproc) \
   		zip \
   		bz2
   
  
positive.code: RUN apt-get update \
  	&& apt-get install -y libicu-dev \
  	&& docker-php-ext-configure intl \
  	&& docker-php-ext-install intl
  
  # xml
  RUN apt-get update \
  	&& apt-get install -y \
  	libxml2-dev \
  	libxslt-dev \
  	&& docker-php-ext-install \
  		dom \
  		xmlrpc \
  		xsl
  
negative.code: 
  
  # others
  RUN docker-php-ext-install -j$(nproc) \
  	soap \
  	sockets \
  	calendar \
  