docker: use unbuffered output in init

diff --git a/dockerdata/startup.py b/dockerdata/startup.py
index 7819cc306e266c8e68ae90e1a100a3c5b1b69df4..8d738fd3e34d9c9ed5f122bb5d91c73af237d01a 100755 (executable)
--- a/dockerdata/startup.py
+++ b/dockerdata/startup.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env -S python3 -u
 import os
 import sys
 import jinja2