diff --git a/changelog.d/20075.docker b/changelog.d/20075.docker
new file mode 100644
index 0000000000..26c96d47eb
--- /dev/null
+++ b/changelog.d/20075.docker
@@ -0,0 +1 @@
+Run with `PYTHONUNBUFFERED=1` so to ensure can always see log output when things go wrong.