anchor.diff:  
   VOLUME /var/www/html
   
  +WORKDIR /var/www/html
  +
   COPY opcache-recommended.ini /usr/local/etc/php/conf.d
   
   COPY docker-entrypoint.sh /usr/local/bin
   
   ENTRYPOINT ["docker-entrypoint.sh"]
   
  -CMD ["php-fpm"]
  +CMD ["php-fpm7"]
  
positive.code: FROM mritd/php7:7.1.9 
  
  LABEL maintainer="mritd <mritd1234@gmail.com>"
  
  
negative.code:     && export GNUPGHOME="$(mktemp -d)" \
      && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys ${OWNCLOUD_GPGKEY} \
      && gpg --batch --verify owncloud.tar.bz2.asc owncloud.tar.bz2 \
      && mkdir /usr/src \
      && tar -xjf owncloud.tar.bz2 -C /usr/src \
      && addgroup -g 82 -S www-data \
      && adduser -u 82 -D -S -G www-data www-data \
      && ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
      && echo "Asia/Shanghai" > /etc/timezone \
      && rm -rf ${GNUPGHOME} \
  