anchor.diff:  
   COPY . /work
   WORKDIR /work
  -
   RUN ./pkg/deb/build.sh
   
   FROM centos:7 AS centos7
  
positive.code: 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=focal /tmp/google-cloud-ops-agent.tgz /google-cloud-ops-agent-ubuntu-focal.tgz
  COPY --from=focal /google-cloud-ops-agent*.deb /
  
  
negative.code: WORKDIR /work
  RUN ./pkg/deb/build.sh
  
  FROM ubuntu:hirsute AS hirsute
  
  RUN set -x; apt-get update && \
      DEBIAN_FRONTEND=noninteractive apt-get -y install git systemd \
      autoconf libtool libcurl4-openssl-dev libltdl-dev libssl-dev libyajl-dev \
      build-essential cmake bison flex file libsystemd-dev \
      devscripts cdbs pkg-config golang-go
  
  COPY . /work
  WORKDIR /work
  RUN ./pkg/deb/build.sh
  
  FROM ubuntu:focal AS focal
  
  RUN set -x; apt-get update && \
  