Hey CKAN folks,

I'm developing a Kubernetes Helm Chart for CKAN with a couple of extensions (available here).

It would be great to be able to set UWSGI_OPTS from ENV vars for several scenarios:

• Set additional security headers: Add CSP headers using UWSGI tum-gis/ckan-docker#78
• Cusomize UWSGI options for specific cloud requirements Change uwsgi.conf for old Linux kernels tum-gis/ckan-docker#39

The ideal solution I see would look like this:

1. UWSGI_OPTS is set to the defaults currently specified in ckan_start.sh:
   

   ckan-docker-base/ckan-2.11/setup/start_ckan.sh

   Lines 36 to 43 in c2615e6

   	UWSGI_OPTS="--socket /tmp/uwsgi.sock \
   	--wsgi-file /srv/app/wsgi.py \
   	--module wsgi:application \
   	--http [::]:5000 \
   	--master --enable-threads \
   	--lazy-apps \
   	-p 2 -L -b 32768 --vacuum \
   	--harakiri $UWSGI_HARAKIRI"

   • This would need to be change in a way, that the value can be overwritten using an ENV var. It is then in the resposibility of the user to provide suitable settings for CKAN.

2. There should be another ENV var, that allows to extend the given defaults in UWSGI_OPTS, for instance EXTRA_UWSGI_OPTS.

This would allow to easily adapt the given defaults when its requried, or even overwirte the defaults options entirely, if this is necessary.

Are you generally open to a change like this? I could prepare a PR if yes.