anchor.diff:  ARG artifacts="builder"
   
   # This controls where we copy envoy from.
  -ARG envoy="quay.io/datawire/ambassador:0.80.0"
  +ARG envoy="quay.io/datawire/ambassador:0.83.0"
   
   ########################################
   # The builder image
  
positive.code: RUN ln -s /usr/bin/python3 /usr/bin/python
  
  COPY --from=envoy /usr/local/bin/envoy /usr/local/bin/envoy
  COPY --from=builder /usr/lib/python3.6/site-packages /usr/lib/python3.6/site-packages
  
  COPY --from=artifacts /buildroot/bin/ambex /usr/bin/ambex
  COPY --from=artifacts /buildroot/bin/watt /usr/bin/watt
  
negative.code: 
  # This argument controlls the base image is used for both our build
  # container and for the release containers.
  ARG base="frolvlad/alpine-glibc:alpine-3.10"
  
  # This argument controls where the release images get their artifacts
  # from. We override it for incremental builds, but default it to the
  