diff --git a/s2i/sf-demo/Dockerfile b/s2i/sf-demo/Dockerfile
old mode 100755
new mode 100644
index c50307f..02f1054
--- a/s2i/sf-demo/Dockerfile
+++ b/s2i/sf-demo/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu
+FROM ubuntu:22.04
 
 EXPOSE 8080