Fix nginx root location handling for index.html

- Updated try_files directive to serve index.html for root requests
- Changed from 'try_files  / =404;' to 'try_files  / /index.html =404;'
- This fixes 403 error when requesting bare domain URL
- Ensures proper fallback to index.html for root directory requests

nginx.template.conf

@@ -47,7 +47,7 @@ http {
 
         # Static files for root directory
         location / {
-            try_files $uri $uri/ =404;
+            try_files $uri $uri/ /index.html =404;
 
             # Expires headers for static assets
             location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot|bmp|webp|cur)$ {