fails gracefully if image argument is missing

jpbochi · Aug 16, 2016 · 39937b0 · 39937b0
1 parent 60beb9a
commit 39937b0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drun b/drun
@@ -63,7 +63,7 @@ done
 shift $((OPTIND-1))
 
 if [ -z "${IMAGE:-}" ]; then
-  IMAGE=$1
+  IMAGE="${1:-}"
   [ -z "$IMAGE" ] && usage
   shift
 fi