diff --git a/build-and-run.sh b/build-and-run.sh
index 4f1c526..a43cdc7 100755
--- a/build-and-run.sh
+++ b/build-and-run.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 # Set the working directory
 cd /services/duogradus/