Add run-local target to Makefile

Change-Id: I72c04f97f8824eafdc8812a1f98145ae056e4377
diff --git a/Makefile b/Makefile
index b066708..fe7fe1f 100644
--- a/Makefile
+++ b/Makefile
@@ -9,3 +9,8 @@
 
 push-prod: docker-prod
 	docker push $(IMAGE_PROD):$(VERSION)
+
+# First copy .env.sample to .env and docker-compose.yml.sample to
+# docker-compose.yml, and change them as you wish.
+run-local: docker-prod
+	docker-compose up