anchor.diff:  
       # Verify signature
       curl -SLo php-${PHP_VERSION}.tar.gz.asc http://ch1.php.net/get/php-${PHP_VERSION}.tar.gz.asc/from/this/mirror && \
  -    gpg php-${PHP_VERSION}.tar.gz.asc
  -
  -RUN \
  +    gpg php-${PHP_VERSION}.tar.gz.asc && \
  +
       cd /tmp/build/php && \
       # Unpack tarball
  -    tar -xvzf php-${PHP_VERSION}.tar.gz
  -
  -RUN \
  +    tar -xvzf php-${PHP_VERSION}.tar.gz && \
  +
       cd /tmp/build/php/php-${PHP_VERSION} && \
       # Run configuration
       ./configure \
  
positive.code:         # In general...
          build-essential \
          curl \
  
          # For Nginx
          libpcre3-dev \
  
negative.code:         --with-http_ssl_module \
          --with-http_v2_module \
          --with-pcre \
          --with-threads && \
  
      cd /tmp/build/nginx/nginx-${NGINX_VERSION} && \
      # Start compiling and installing
      make -j$(nproc) build && \
      make modules && \
      make install && \
  
      # Nginx configuration
      mv /tmp/build/scripts/nginx.conf /usr/local/nginx/conf/ && \
  
      mkdir -p /tmp/build/php/ && \
      cd /tmp/build/php && \
  
      # Download PHP
      curl -SLo php-${PHP_VERSION}.tar.gz http://ch1.php.net/get/php-${PHP_VERSION}.tar.gz/from/this/mirror && \
  
      cd /tmp/build/php/ && \
  
      # GPG keys from the release managers of PHP 7.0
  