anchor.diff:          -C ${TMP_DIR} &&\
       curl -Ls https://github.com/openssl/openssl/archive/OpenSSL_${OPENSSL_VERSION}.tar.gz | tar -xzvf - \
           -C ${TMP_DIR} &&\
  -    cd ${TMP_DIR}/nginx-${NGINX_VERSION} &&\
  -    ./configure \
  +    cd ${TMP_DIR}/nginx-release-${NGINX_VERSION} &&\
  +    ./auto/configure \
           --add-module=${TMP_DIR}/ngx_pagespeed-${NPS_VERSION}-beta \
           --conf-path=/etc/nginx/nginx.conf \
           --error-log-path=${NGINX_LOG_PATH}/error.log \
  
positive.code:         -C ${TMP_DIR} &&\
      curl -Ls https://dl.google.com/dl/page-speed/psol/${NPS_VERSION}.tar.gz | tar -xvzf - \
          -C ${TMP_DIR}/ngx_pagespeed-${NPS_VERSION}-beta --exclude=lib/Debug &&\
      curl -Ls https://github.com/nginx/nginx/archive/v${NGINX_VERSION}.tar.gz | tar -xvzf - \
          -C ${TMP_DIR} &&\
      curl -Ls ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-${PCRE_VERSION}.tar.gz | tar -xvzf - \
          -C ${TMP_DIR} &&\
  
negative.code: 
  RUN NPS_VERSION=1.9.32.3 \
      PCRE_VERSION=8.37 \
      NGINX_VERSION=1.9.2 \
      ZLIB_VERSION=1.2.8 \
      OPENSSL_VERSION=1_0_2a \
      NGINX_LOG_PATH=/var/log/nginx \
  