anchor.diff:  
   # build go lang examples first in a separate layer
   
  -FROM apachepulsar/pulsar-all:latest as pulsar-function-go
  +FROM apachepulsar/pulsar:latest as pulsar-function-go
   
   USER root
   
  
positive.code: # copy go test examples
  COPY --from=pulsar-function-go /go/bin /pulsar/examples/go-examples
  
  # change ownership of files
  RUN chown -R pulsar:0 /pulsar && chmod -R g=u /pulsar
  
  
negative.code:     && apt-get autoclean \
      && rm -rf /var/lib/apt/lists/*
  
  CMD bash
  