Fix 404 on SPA routes by adding location / with try_files

Author: rubenhensen

docker/default.conf.template

@@ -41,6 +41,10 @@ server {
         try_files $uri $uri/ index.html =404;
     }
 
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
     # these all include hashes, so we can cache them for a long time.
     location ~* \.(?:svg|ttf|js|css|wasm)$ {
         expires 1y;