Allow passing additional commandline arguments to gunicorn

Author: rolandgeider

config/prod.env

@@ -168,6 +168,10 @@ NUMBER_OF_PROXIES=1
 
 #
 # Gunicorn
-# The number of workers to spawn. This is the number of processes that will be
-# spawned to handle requests. The recommended number of workers is (2 x $num_cores) + 1
-GUNICORN_WORKERS=3
+#
+# Additional gunicorn options, change as needed.
+# For the number of workers to spawn, a usually recommended value is (2 x $num_cores) + 1
+# see:
+#   - https://docs.gunicorn.org/en/stable/settings.html
+#   - https://github.com/wger-project/wger/blob/master/extras/docker/production/entrypoint.sh#L95
+GUNICORN_CMD_ARGS="--workers 3 --threads 2 --worker-class gthread --proxy-protocol True --timeout 240"