anchor.diff:  ##ENV KIBANA_VERSION 4.0.0-BETA2
   ENV KIBANA_VERSION 3.1.2
   ENV KIBANA_BASE /var/www
  +ENV KIBANA_HOME ${KIBANA_BASE}/kibana
   RUN mkdir -p ${KIBANA_BASE}
   WORKDIR ${KIBANA_BASE}
   RUN wget https://download.elasticsearch.org/kibana/kibana/kibana-${KIBANA_VERSION}.tar.gz \
  
positive.code: #                           Added environment variable for nginx config directory.
  # 2014/12/03 cgwong v0.2.1: Updated Kibana version. Switch to specific nginx version.
  # 2014/12/04 cgwong v0.2.2: Introduce more environment variables. Corrected bug in dashboard copy.
  # ################################################################
  
  FROM dockerfile/ubuntu
  
negative.code:     apache2-utils \
      nginx=${NGINX_VERSION}
  
  # Forward standard out 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
  
  