anchor.diff:  # SET environment variables
   ENV SOLR_VERSION 5.1.0
   ENV JAVA_VERSION 1.7.0
  -ENV REDIS_VERSION 3.0.6
   ENV NODE_VERSION 5
   ENV SOLR_INSTALL_DIR /opt/solr
  -ENV REDIS_INSTALL_DIR /opt/redis
   ENV SIEVEABLE_TARGET_DIR /opt/apps
   ENV SIEVEABLE_PORT 3000
   ENV NODE_ENV development
  
positive.code: # Clone Sieveable
  RUN git clone https://github.com/sikuli/sieveable.git ${SIEVEABLE_TARGET_DIR}/sieveable
  WORKDIR ${SIEVEABLE_TARGET_DIR}/sieveable
  # Start Redis
  RUN redis-server config/redis.conf
  # Install dependencies, run build tasks, and run test
  RUN npm install && gulp && npm test
  EXPOSE 3000
  
negative.code:     && mkdir -p ${SOLR_INSTALL_DIR} \
      && tar -xzf solr-${SOLR_VERSION}.tgz -C ${SOLR_INSTALL_DIR} --strip-components=1 \
      && rm solr-${SOLR_VERSION}.tgz
  # Start Solr and create our collections
  RUN solr start -c -V -p 8983 \
      && solr create -c sieveable-listing -p 8983 \
  