Add entrypoint script which dynamically writes gunicorn.conf.py to handle user/group=None

Author: manisandro

Dockerfile

@@ -27,17 +27,9 @@ RUN \
     apk del build-deps
 
 ADD src /srv/qwc_service/
+ADD entrypoint.sh /entrypoint.sh
 
 ENV LD_LIBRARY_PATH=/usr/lib/jvm/java-21-openjdk/lib/server
 ENV SERVICE_MOUNTPOINT=/api/v1/document
 
-ENTRYPOINT ["/bin/sh", "-c", "\
-    HOME=/tmp gunicorn --chdir /srv/qwc_service \
-    --bind :9090 \
-    --workers $UWSGI_PROCESSES \
-    --threads $UWSGI_THREADS \
-    --user $SERVICE_UID --group $SERVICE_GID \
-    --worker-class gthread \
-    --pythonpath /srv/qwc_service/.venv/lib/python*/site-packages \
-    --access-logfile - \
-    server:app"]
+ENTRYPOINT ["sh", "/entrypoint.sh"]

entrypoint.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+cat > /tmp/gunicorn.conf.py <<EOF
+user = ${SERVICE_UID:-None}
+group = ${SERVICE_GID:-None}
+EOF
+
+HOME=/tmp gunicorn \
+    --chdir /srv/qwc_service \
+    --bind :9090 \
+    --workers $UWSGI_PROCESSES \
+    --threads $UWSGI_THREADS \
+    --worker-class gthread \
+    --pythonpath /srv/qwc_service/.venv/lib/python*/site-packages \
+    --access-logfile - \
+    -c /tmp/gunicorn.conf.py \
+    server:app