From 95bf09c7fda8564869f06231c67319b8ca874e6f Mon Sep 17 00:00:00 2001
From: Peter Dave Hello <hsu@peterdavehello.org>
Date: Wed, 19 Dec 2018 03:06:26 +0800
Subject: [PATCH] Add prompt msg about Dockerfile updated in update.sh

---
 update.sh | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/update.sh b/update.sh
index 85ed1277..5565383e 100755
--- a/update.sh
+++ b/update.sh
@@ -178,6 +178,13 @@ function update_node_version() {
     if [ -f "${dockerfile}-tmp-e" ]; then
       rm "${dockerfile}-tmp-e"
     fi
+
+    if diff -q "${dockerfile}-tmp" "${dockerfile}" > /dev/null; then
+      echo "${dockerfile} is already up to date!"
+    else
+      echo "${dockerfile} updated!"
+    fi
+
     mv -f "${dockerfile}-tmp" "${dockerfile}"
   )
 }