Add makefile for building and pushing image

Author: yuvipanda

Diff for: Makefile

@@ -0,0 +1,11 @@
+VERSION=$(shell git rev-parse --short HEAD)
+IMAGE_PREFIX=jupyter/
+
+build-image:
+	docker build -t $(IMAGE_PREFIX)repo2docker:v$(VERSION) .
+
+push-image:
+	docker push $(IMAGE_PREFIX)repo2docker:v$(VERSION)
+
+.all:
+	build-image push-image