anchor.diff:          pdo_mysql \
           opcache \
           pcntl \
  +        bcmath \
   	exif \
   	mbstring \
       && docker-php-ext-configure gd \
  
positive.code: #--------------------------------------------------------------------------
  #
  
  ENV NGINX_VERSION 1.13.8
  
  RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
      && CONFIG="\
          --prefix=/etc/nginx \
          --sbin-path=/usr/sbin/nginx \
          --modules-path=/usr/lib/nginx/modules \
          --conf-path=/etc/nginx/nginx.conf \
          --error-log-path=/var/log/nginx/error.log \
          --http-log-path=/var/log/nginx/access.log \
          --pid-path=/var/run/nginx.pid \
          --lock-path=/var/run/nginx.lock \
          --http-client-body-temp-path=/var/cache/nginx/client_temp \
          --http-proxy-temp-path=/var/cache/nginx/proxy_temp \
          --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp \
          --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp \
          --http-scgi-temp-path=/var/cache/nginx/scgi_temp \
          --user=nginx \
          --group=nginx \
          --with-http_ssl_module \
          --with-http_realip_module \
          --with-http_addition_module \
          --with-http_sub_module \
          --with-http_dav_module \
          --with-http_flv_module \
          --with-http_mp4_module \
          --with-http_gunzip_module \
          --with-http_gzip_static_module \
          --with-http_random_index_module \
          --with-http_secure_link_module \
          --with-http_stub_status_module \
          --with-http_auth_request_module \
          --with-http_xslt_module=dynamic \
          --with-http_image_filter_module=dynamic \
          --with-http_geoip_module=dynamic \
          --with-threads \
          --with-stream \
          --with-stream_ssl_module \
          --with-stream_ssl_preread_module \
          --with-stream_realip_module \
          --with-stream_geoip_module=dynamic \
          --with-http_slice_module \
          --with-mail \
          --with-mail_ssl_module \
          --with-compat \
          --with-file-aio \
          --with-http_v2_module \
      " \
      && addgroup -S nginx \
      && adduser -D -S -h /var/cache/nginx -s /sbin/nologin -G nginx nginx \
      && apk add --no-cache --virtual .build-deps \
          gcc \
          libc-dev \
          make \
          openssl-dev \
          pcre-dev \
          zlib-dev \
          linux-headers \
          curl \
          gnupg \
          libxslt-dev \
          gd-dev \
          geoip-dev \
      && curl -fSL http://nginx.org/download/nginx-$NGINX_VERSION.tar.gz -o nginx.tar.gz \
      # && curl -fSL http://nginx.org/download/nginx-$NGINX_VERSION.tar.gz.asc  -o nginx.tar.gz.asc \
      # && export GNUPGHOME="$(mktemp -d)" \
      # && found=''; \
      # for server in \
      #     ha.pool.sks-keyservers.net \
      #     hkp://keyserver.ubuntu.com:80 \
      #     hkp://p80.pool.sks-keyservers.net:80 \
      #     pgp.mit.edu \
      # ; do \
      #     echo "Fetching GPG key $GPG_KEYS from $server"; \
      #     gpg --keyserver "$server" --keyserver-options timeout=10 --recv-keys "$GPG_KEYS" && found=yes && break; \
      # done; \
      # test -z "$found" && echo >&2 "error: failed to fetch GPG key $GPG_KEYS" && exit 1; \
      # gpg --batch --verify nginx.tar.gz.asc nginx.tar.gz \
      # && rm -r "$GNUPGHOME" nginx.tar.gz.asc \
      && mkdir -p /usr/src \
      && tar -zxC /usr/src -f nginx.tar.gz \
      && rm nginx.tar.gz \
      && cd /usr/src/nginx-$NGINX_VERSION \
      && ./configure $CONFIG --with-debug \
      && make -j$(getconf _NPROCESSORS_ONLN) \
      && mv objs/nginx objs/nginx-debug \
      && mv objs/ngx_http_xslt_filter_module.so objs/ngx_http_xslt_filter_module-debug.so \
      && mv objs/ngx_http_image_filter_module.so objs/ngx_http_image_filter_module-debug.so \
      && mv objs/ngx_http_geoip_module.so objs/ngx_http_geoip_module-debug.so \
      && mv objs/ngx_stream_geoip_module.so objs/ngx_stream_geoip_module-debug.so \
      && ./configure $CONFIG \
      && make -j$(getconf _NPROCESSORS_ONLN) \
      && make install \
      && rm -rf /etc/nginx/html/ \
      && mkdir /etc/nginx/conf.d/ \
      && mkdir -p /usr/share/nginx/html/ \
      && install -m644 html/index.html /usr/share/nginx/html/ \
      && install -m644 html/50x.html /usr/share/nginx/html/ \
      && install -m755 objs/nginx-debug /usr/sbin/nginx-debug \
      && install -m755 objs/ngx_http_xslt_filter_module-debug.so /usr/lib/nginx/modules/ngx_http_xslt_filter_module-debug.so \
      && install -m755 objs/ngx_http_image_filter_module-debug.so /usr/lib/nginx/modules/ngx_http_image_filter_module-debug.so \
      && install -m755 objs/ngx_http_geoip_module-debug.so /usr/lib/nginx/modules/ngx_http_geoip_module-debug.so \
      && install -m755 objs/ngx_stream_geoip_module-debug.so /usr/lib/nginx/modules/ngx_stream_geoip_module-debug.so \
      && ln -s ../../usr/lib/nginx/modules /etc/nginx/modules \
      && strip /usr/sbin/nginx* \
      && strip /usr/lib/nginx/modules/*.so \
      && rm -rf /usr/src/nginx-$NGINX_VERSION \
      \
      # Bring in gettext so we can get `envsubst`, then throw
      # the rest away. To do this, we need to install `gettext`
      # then move `envsubst` out of the way so `gettext` can
  
negative.code:     && mv /usr/bin/envsubst /tmp/ \
      \
      && runDeps="$( \
          scanelf --needed --nobanner /tmp/envsubst \
              | awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
              | sort -u \
              | xargs -r apk info --installed \
              | sort -u \
      )" \
      && apk add --no-cache $runDeps \
      && apk del .gettext \
      && mv /tmp/envsubst /usr/local/bin/ \
      # Bring in tzdata so users could set the timezones through the environment
      # variables
      && apk add --no-cache tzdata \
      # forward request and error logs to docker log collector
      && ln -sf /dev/stdout /var/log/nginx/access.log \
      && ln -sf /dev/stderr /var/log/nginx/error.log
  #
  #--------------------------------------------------------------------------
  # Install dependencies and extensions
  