From a36634ec3caf937e4f5b99e4b8e7a8d9af1f0bf6 Mon Sep 17 00:00:00 2001
From: Catherine Pitt <cen1001@cam.ac.uk>
Date: Fri, 5 May 2023 14:49:16 +0100
Subject: [PATCH] Improve dockerfile shutdown
By execing python3 rather than running it as a child of /bin/sh shutdown
becomes a lot faster because then the SIGTERM gets seen by the python
process; when /bin/sh is the CMD and is signalled it doesn't pass the
signal on to its child python process, and Docker then waits for 10
seconds before sending a SIGKILL.
---
Dockerfiles/ubuntu-20.04/focal-flask | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Dockerfiles/ubuntu-20.04/focal-flask b/Dockerfiles/ubuntu-20.04/focal-flask
index 16c63cf..e668819 100644
--- a/Dockerfiles/ubuntu-20.04/focal-flask
+++ b/Dockerfiles/ubuntu-20.04/focal-flask
@@ -35,4 +35,4 @@ RUN git archive --format=tar.gz -o /tmp/pl.tgz HEAD
RUN tar -C /var/www/html -x -f /tmp/pl.tgz
WORKDIR /code
ENV CRSID=${CRSID}
-CMD python3 rundebug.py $CRSID
+CMD exec python3 rundebug.py $CRSID
--
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