This should help for well-known

docker/nginx/nginx.conf

@@ -88,4 +88,13 @@ server {
     location = /template.php {
         deny all;
     }
+
+    # make .well-known directory accessible
+    location ~ /.well-known {
+        allow all;
+
+        # serve all files in the .well-known directory
+        # directly without passing the request to the backend
+        try_files $uri =404;
+    }
 }