anchor.diff:  
   ENV RUN_DEBUG 0
   
  -CMD if [ $RUN_DEBUG -gt 0 ]                                         ; \
  -      then                                                            \
  -        echo [DEBUG]; env | grep "._" >> /etc/environment           ; \
  -        env | grep "._" >> /etc/environment                            ; \
  -        /usr/bin/supervisord && /bin/bash                           ; \
  -      else                                                            \
  -        env | grep "._" >> /etc/environment                         ; \
  -        /usr/bin/supervisord --nodaemon                             ; \
  +CMD if [ $RUN_DEBUG -gt 0 ]                                       ; \
  +    then                                                            \
  +      echo [DEBUG]; env | grep "._" >> /etc/environment           ; \
  +      env | grep "._" >> /etc/environment                         ; \
  +      /usr/bin/supervisord && /bin/bash                           ; \
  +    else                                                            \
  +      env | grep "._" >> /etc/environment                         ; \
  +      /usr/bin/supervisord --nodaemon                             ; \
       fi                                                              ;
  
positive.code:   `# remove cached packages`; \
    apt-get clean;
  
  # heka and supervisor configs
  ADD files/hekad/ /etc/hekad/
  ADD files/supervisor/ /etc/supervisor/
  
  RUN \
    `# setup supervisord config files and log directories`; \
  
negative.code:   sed -i "s/{{LOGSERVER_IP}}/$LOGSERVER_IP/g" /etc/hekad/aggregator_output.toml;
  
  ## [serf]
  
  RUN \
    `# Install serf client 0.5.0`                                    ; \
  