anchor.diff:  RUN go get sigs.k8s.io/kubetest2/kubetest2-gke@${KUBETEST2_VERSION}
   RUN go get sigs.k8s.io/kubetest2/kubetest2-kind@${KUBETEST2_VERSION}
   RUN go get sigs.k8s.io/kubetest2/kubetest2-tester-exec@${KUBETEST2_VERSION}
  +RUN go get google.golang.org/protobuf/cmd/protoc-gen-go@v1.26.0
   
  +# According to https://github.com/knative/test-infra/pull/2762 protoc-gen-gogofaster is unsupported (and shouldn't be used?)
  +# Not sure when it can be removed, maybe knative-0.26?
   RUN go get github.com/gogo/protobuf/protoc-gen-gogofaster@v1.3.1
  -RUN go get google.golang.org/protobuf/cmd/protoc-gen-go@v1.26.0
   
   # TODO(chizhg): remove it once we replace with kntest in the places where this tool is used
   # Install our own tools
  
positive.code: 
  RUN java -version && \
      mvn -v
  
  # Extra tools through gem
  # TODO: this tool isn't used anymore, remove when release-0.22 is cut; and don't install rubygems above either
  RUN gem install mdl
  
  # Install go 1.13, 1.14, and 1.15 using https://github.com/moovweb/gvm
  # Missing prerequisite:
  
negative.code: RUN wget -qO - https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public | apt-key add -
  RUN echo "deb https://adoptopenjdk.jfrog.io/adoptopenjdk/deb buster main" | tee /etc/apt/sources.list.d/adoptopenjdk.list
  RUN apt-get update
  RUN apt-get install -y adoptopenjdk-${JAVA_VERSION}-hotspot
  ENV JAVA_HOME=/usr/lib/jvm/adoptopenjdk-${JAVA_VERSION}-hotspot-amd64
  
  # Setup maven and required envs
  