anchor.diff:  
   MAINTAINER Trurl McByte "trurl@mcbyte.net"
   
  -ENV NGINX_VERSION=1.10.3 \
  +ENV NGINX_VERSION=1.12.0 \
       SOURCE_DIR=/usr/src
   
   ENV GPG_KEYS B0F4253373F8F6F510D42178520A9993A1C052F8
  
positive.code:     --with-cc-opt='-O2' \
      "
  
  RUN addgroup -S nginx \
      && adduser -D -S -h /var/cache/nginx -s /sbin/nologin -G nginx nginx \
      && apk add --no-cache \
          apr \
          apr-util \
          ca-certificates \
          icu \
          icu-libs \
          libjpeg-turbo \
          libuuid \
          openssl \
          pcre \
          zlib \
      && apk add --no-cache --virtual .build-deps \
  
negative.code:         bison \
          build-base \
          cmake \
          expat-dev \
          file \
          flex \
  