add initial version of Grafana updater

grafana-watcher/Makefile

@@ -0,0 +1,20 @@
+all: build
+
+FLAGS =
+ENVVAR = GOOS=linux GOARCH=amd64 CGO_ENABLED=0
+REGISTRY = quay.io/coreos
+TAG = latest
+
+build:
+	$(ENVVAR) go build -o grafana-watcher main.go
+
+image: build
+	docker build -t ${REGISTRY}/grafana-watcher:$(TAG) .
+
+push: image
+	docker push ${REGISTRY}/grafana-watcher:$(TAG)
+
+clean:
+	rm -f grafana-watcher
+
+.PHONY: all build image push clean