Finish packaging and change to src-based packaging layout, replace caddy with haproxy for performance, and update docker-compose and Dockerfiles for new packaging.

src/pkmntrade_club/common/context_processors.py

@@ -0,0 +1,6 @@
+from django.conf import settings
+
+def cache_settings(request):
+    return {
+        'CACHE_TIMEOUT': settings.CACHE_TIMEOUT,
+    }