Update gce docs (#8866)

* update GCE doc with proxy protocol and some fixes

Signed-off-by: James Strong <[email protected]>

* update gke docs

Signed-off-by: James Strong <[email protected]>

Author: strongjz

Makefile

@@ -56,7 +56,7 @@ endif
 MAC_OS = $(shell uname -s)
 
 ifeq ($(MAC_OS), Darwin)
-	MAC_DOCKER_FLAGS=
+	MAC_DOCKER_FLAGS="--load"
 else
 	MAC_DOCKER_FLAGS=
 endif
@@ -220,7 +220,10 @@ dev-env-stop: ## Deletes local Kubernetes cluster created by kind.
 
 .PHONY: live-docs
 live-docs: ## Build and launch a local copy of the documentation website in http://localhost:8000
-	@docker build ${PLATFORM_FLAG} ${PLATFORM} -t ingress-nginx-docs .github/actions/mkdocs
+	@docker build ${PLATFORM_FLAG} ${PLATFORM} \
+                  		--no-cache \
+                  		$(MAC_DOCKER_FLAGS) \
+                  		 -t ingress-nginx-docs .github/actions/mkdocs
 	@docker run ${PLATFORM_FLAG} ${PLATFORM} --rm -it \
 		-p 8000:8000 \
 		-v ${PWD}:/docs \