anchor.diff:                            zlib1g \
                             zlib1g-dev \
       && mkdir daq \
  -        && curl -sSL https://snort.org/downloads/snort/daq-2.0.6.tar.gz | tar xz --strip 1 -C daq \
  +        && curl -sSL https://snort.org/downloads/snort/daq-${DAQ_VERSION}.tar.gz | tar xz --strip 1 -C daq \
           && cd daq \
           && ./configure \
           && make install \
           && cd .. \
           && rm -rf daq \
       && mkdir libdnet \
  -        && curl -sSL https://github.com/dugsong/libdnet/archive/libdnet-1.12.tar.gz | tar xz --strip 1 -C libdnet \
  +        && curl -sSL https://github.com/dugsong/libdnet/archive/libdnet-${LIBDNET_VERSION}.tar.gz | tar xz --strip 1 -C libdnet \
           && cd libdnet \
           && ./configure \
           && make install \
  
positive.code:         && cd .. \
          && rm -rf libdnet \
      && mkdir snort \
          && curl -sSL https://snort.org/downloads/snort/snort-2.9.7.5.tar.gz | tar xz --strip 1 -C snort \
          && cd snort \
          && ./configure --enable-sourcefire \
          && make install \
  
negative.code: FROM debian:jessie
  MAINTAINER kev <noreply@easypi.info>
  
  ENV DAQ_VERSION 2.0.6
  ENV SNORT_VERSION 2.9.8.2
  ENV LIBDNET_VERSION 1.12
  
  RUN set -xe \
      && apt-get update \
      && apt-get install -y build-essential \
                            bison \
                            curl \
  