anchor.diff:    && adduser -D www-data
   
   # forward request and error logs to docker log collector
  -RUN ln -sf /dev/stdout /var/log/nginx/access.log && \
  -    ln -sf /dev/stderr /var/log/nginx/error.log
  +RUN ln -sf /dev/stdout /var/log/nginx/access.log \
  +    && ln -sf /dev/stderr /var/log/nginx/error.log
   
   VOLUME ["/var/log/nginx"]
   
  
positive.code:   && mkdir -p /tmp/src \
    && cd /tmp/src \
    && wget http://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz \
    && tar -zxvf nginx-${NGINX_VERSION}.tar.gz \
    && cd nginx-${NGINX_VERSION} \
    && ./configure \
  
negative.code: MAINTAINER Dominique HAAS <contact@dominique-haas.fr>
  
  ENV NGINX_VERSION 1.9.12
  
  
  RUN \
    build_pkgs="build-base linux-headers openssl-dev pcre-dev wget zlib-dev" \
  