anchor.diff:      gcloud info | tee /workspace/gcloud-info.txt
   
   # Cluster Version
  -ENV CLUSTER_VERSION=1.16
  +ENV CLUSTER_VERSION=1.20
   
  -# Kubectl 1.16
  +# Kubectl 1.20
   RUN mv /google-cloud-sdk/bin/kubectl.${CLUSTER_VERSION} /google-cloud-sdk/bin/kubectl
   
   # Docker-in-docker
  
positive.code:     && apt-get clean
  
  # Install gcloud
  ENV CLOUD_SDK_VERSION=299.0.0
  ENV PATH=/google-cloud-sdk/bin:/workspace:${PATH} \
      CLOUDSDK_CORE_DISABLE_PROMPTS=1
  
  
negative.code: ENV COSIGN_VERSION=1.0.0
  RUN wget https://github.com/sigstore/cosign/releases/download/v${COSIGN_VERSION}/cosign-linux-amd64 -O /usr/local/bin/cosign &&\
      chmod +x /usr/local/bin/cosign
  
  # The following lines needed for using dind since debian is using nftables by default
  RUN update-alternatives --set iptables /usr/sbin/iptables-legacy && \
      update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
  