output image+tag when complete

output image+tag when complete

diff --git a/Makefile b/Makefile
index c225140..e94a9dd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,10 @@
 IMAGE := discourse/logstash
 TAG := $(shell grep FROM Dockerfile | cut -d: -f2)-$(shell date -u +%Y%m%d.%H%M%S)
 
+.PHONY: default
+default: push
+	@printf "${IMAGE}:${TAG} ready\n"
+
 .PHONY: push
 push: build
 	docker push ${IMAGE}:${TAG}

GitHub sha: c7ae24d719a2eeb8157a5a0d091040e00e113a56