anchor.diff:  FROM fluent/fluentd:v1.3.2-debian AS builder
   
   ENV PATH /home/fluent/.gem/ruby/2.3.0/bin:$PATH
  +
  +COPY ./fluent-plugin-kubernetes_sumologic*.gem ./
   
   # New fluent image dynamically creates user in entrypoint
   RUN [ -f /bin/entrypoint.sh ] && /bin/entrypoint.sh echo || : && \
  
positive.code:     gem install fluent-plugin-concat -v 2.3.0 && \
      gem install fluent-plugin-rewrite-tag-filter -v 2.1.0 && \
      gem install fluent-plugin-prometheus -v 1.1.0 && \
      rm -rf /home/fluent/.gem/ruby/2.3.0/cache/*.gem && \
      gem sources -c && \
      apt-get remove --purge -y build-essential ruby-dev libffi-dev libsystemd-dev && \
  
negative.code: COPY ./conf.d/ /fluentd/conf.d/
  COPY ./etc/* /fluentd/etc/
  COPY ./entrypoint.sh /fluentd/
  
  ENTRYPOINT ["/fluentd/entrypoint.sh"]
  