anchor.diff:  # mountpoints in /config are special.
   RUN mkdir -p /go && \
       mkdir -p /gocache && \
  -    mkdir -p /goinstall && \
  +    mkdir -p /gobin && \
       mkdir -p /config/.docker && \
       mkdir -p /config/.config/gcloud && \
       mkdir -p /config/.kube && \
  
positive.code: ENV GOROOT=/usr/local/go
  ENV GOPATH=/go
  ENV GOCACHE=/gocache
  ENV GOBIN=/goinstall
  ENV PATH=/usr/local/go/bin:/goinstall:/usr/local/google-cloud-sdk/bin:$PATH
  
  # LLVM support
  ENV LLVM_DIRECTORY=/usr/lib/llvm
  
negative.code: ENV GOROOT=/usr/local/go
  ENV GOPATH=/go
  ENV GOCACHE=/gocache
  ENV GOBIN=/gobin
  ENV PATH=/usr/local/go/bin:/gobin:/usr/local/google-cloud-sdk/bin:$PATH
  
  # Ruby suppport
  