force https in opensearch xml

docker-compose.yml

@@ -10,6 +10,7 @@ version: '2'
 # docker compose run --rm packages_web python manage.py generate_keyring pgp.surfnet.nl ./config/keyring
 # docker compose run --rm packages_web python manage.py pgp_import ./config/keyring
 ## go to /admin/devel/developerkey/ and set the owner (and parent) for the ownerless key
+## go to /admin/sites/site/1/change/ and set the domain
 
 
 services:

packages/views/__init__.py

@@ -21,7 +21,7 @@ from ..utils import get_wrong_permissions, multilib_differences
 @require_safe
 @cache_control(public=True, max_age=86400)
 def opensearch(request):
-    domain = "%s://%s" % (request.scheme, request.META.get('HTTP_HOST'))
+    domain = "%ss://%s" % ('https', request.META.get('HTTP_HOST'))
 
     return render(request, 'packages/opensearch.xml',
                   {'domain': domain},