Add more GO env vars

Author: dims

images/build/cross/default/Dockerfile

@@ -45,6 +45,10 @@ ENV KUBE_CROSSPLATFORMS \
 COPY --from=go-source /usr/local/go /usr/local/go
 ENV PATH=/usr/local/go/bin:$PATH
 ENV GOROOT=/usr/local/go
+ENV GOLANG_VERSION=${GO_VERSION}
+ENV GOTOOLCHAIN=local
+ENV GOPATH=/usr/local/go
+
 # Pre-compile the standard go library when cross-compiling. This is much easier now when we have go1.5+
 RUN targetArch=$(echo $TARGETPLATFORM | cut -f2 -d '/') \
     && if [ ${targetArch} = "amd64" ]; then \

images/build/go-runner/Dockerfile

@@ -29,6 +29,9 @@ COPY --from=go-source /usr/local/go /usr/local/go
 # Set up Go environment
 ENV PATH=/usr/local/go/bin:$PATH
 ENV GOROOT=/usr/local/go
+ENV GOLANG_VERSION=${GO_VERSION}
+ENV GOTOOLCHAIN=local
+ENV GOPATH=/usr/local/go
 
 # Copy the sources
 COPY ./go-runner.go ./

images/releng/ci/Dockerfile

@@ -26,6 +26,9 @@ COPY --from=go-source /usr/local/go /usr/local/go
 # Set up Go environment
 ENV PATH=/usr/local/go/bin:$PATH
 ENV GOROOT=/usr/local/go
+ENV GOLANG_VERSION=${GO_VERSION}
+ENV GOTOOLCHAIN=local
+ENV GOPATH=/usr/local/go
 
 # Install required packages for adding Google Cloud SDK repository
 RUN apt-get update && \

images/releng/k8s-ci-builder/Dockerfile

@@ -29,6 +29,9 @@ COPY --from=go-source /usr/local/go /go
 # Set up Go environment
 ENV PATH=/go/bin:$PATH
 ENV GOROOT=/go
+ENV GOLANG_VERSION=${GO_VERSION_TOOLING}
+ENV GOTOOLCHAIN=local
+ENV GOPATH=/go
 
 WORKDIR /go/src/k8s.io/release