Add link checker

Signed-off-by: lucperkins <lucperkins@gmail.com>

.gitignore

@@ -12,3 +12,7 @@ $RECYCLE.BIN/
 # OSX
 .DS_Store
 *~
+
+# Link checker
+bin/
+tmp/

.htmltest.external.yml

@@ -0,0 +1,3 @@
+DirectoryPath: public
+IgnoreDirectoryMissingTrailingSlash: true
+IgnoreAltMissing: true

.htmltest.yml

@@ -0,0 +1,4 @@
+DirectoryPath: public
+IgnoreDirectoryMissingTrailingSlash: true
+CheckExternal: false
+IgnoreAltMissing: true

Makefile

@@ -2,6 +2,9 @@ HUGO_VERSION =  0.66.0
 DOCKER_IMG   := klakegg/hugo:$(HUGO_VERSION)
 SERVE_CMD    =  server --buildDrafts --buildFuture --disableFastRender --ignoreCache
 
+clean:
+	rm -rf public resources
+
 serve:
 	hugo server \
 		--buildDrafts \
@@ -11,13 +14,28 @@ serve:
 docker-serve:
 	docker run --rm -it -v $(CURDIR):/src -p 1313:1313 $(DOCKER_IMG) $(SERVE_CMD)
 
-production-build:
+production-build: clean
 	hugo \
 		--minify
 
-preview-build:
+	make check-internal-links
+
+preview-build: clean
 	hugo \
 		--baseURL $(DEPLOY_PRIME_URL) \
 		--buildDrafts \
 		--buildFuture \
 		--minify
+
+	make check-internal-links
+
+link-checker-setup:
+	curl https://raw.githubusercontent.com/wjdp/htmltest/master/godownloader.sh | bash
+
+run-link-checker:
+	bin/htmltest
+
+check-internal-links: link-checker-setup run-link-checker
+
+check-all-links: link-checker-setup
+	bin/htmltest --conf .htmltest.external.yml

content/blog/2016-10-13-bazel-rules-protobuf.md

@@ -729,8 +729,7 @@ response to the client.
 
 ### 2.4.4: The GreeterTimer Client
 
-The
+The [Go client](go/main.go)
-[go client](go/main.go)
 prepares a `TimerRequest` and gets back a stream interface from the
 `client.TimeHello` method.  We call its `Recv()` method until EOF, at
 which point the call is complete.  A summary of each BatchResponse is