diff --git a/build.sh b/build.sh
index 12ec0faa7..c53d60562 100755
--- a/build.sh
+++ b/build.sh
@@ -1,2 +1,4 @@
-docker build -t quay.io/quay/quay:`git rev-parse --short HEAD` .
-echo quay.io/quay/quay:`git rev-parse --short HEAD`
\ No newline at end of file
+TAG=$(git rev-parse --short HEAD)$(test -n "$(git status --porcelain)" && echo -dirty)
+REPO=quay.io/quay/quay:$TAG
+docker build -t $REPO .
+echo $REPO