anchor.diff:  COPY --from=stretch /tmp/google-cloud-ops-agent.tgz /google-cloud-ops-agent-debian-stretch.tgz
   COPY --from=stretch /google-cloud-ops-agent*.deb /
   
  +COPY --from=hirsute /tmp/google-cloud-ops-agent.tgz /google-cloud-ops-agent-ubuntu-hirsute.tgz
  +COPY --from=hirsute /google-cloud-ops-agent*.deb /
  +
   COPY --from=focal /tmp/google-cloud-ops-agent.tgz /google-cloud-ops-agent-ubuntu-focal.tgz
   COPY --from=focal /google-cloud-ops-agent*.deb /
   
  
positive.code: WORKDIR /work
  RUN ./pkg/deb/build.sh
  
  FROM ubuntu:focal AS focal
  
  RUN set -x; apt-get update && \
  
negative.code: 
  COPY . /work
  WORKDIR /work
  RUN ./pkg/deb/build.sh
  
  FROM centos:7 AS centos7
  