Add return value check for tagging

Signed-off-by: Qi Zheng <qi.zheng@intel.com>

docker-hooks.sh

@@ -13,9 +13,8 @@ function get_tag {
 
     # no matches, return NULL tag
     if [ -z "$matches" ]; then
-        echo ""
         echo "no $pkg found on the release $clr_ver"
-        exit 0
+        exit 1
     fi
 
     matches=($matches)

redis/hooks/post_push

@@ -1,16 +1,13 @@
 #!/bin/bash
 echo "=> Tagging the image"
 
-set -e
-
 . ../docker-hooks.sh
 
 image="clearlinux/redis"
 tag=$(get_tag redis-native)
 
-if [ -z "$tag" ]; then
-    echo "no $pkg found on the release $clr_ver"
-else
+if [ $? -eq 0 ] && [ -n "$tag" ]; then
+    set -e
     docker tag $image:latest $image:$tag
     docker push $image:$tag
     major_tag=${tag%%.*}