Try try_files.

docker/server/nginx.conf

@@ -31,6 +31,8 @@ http {
         root /srv/http/public;
 
         location / {
+            try_files $uri $uri/ =404;
+
             index index.html index.htm;
             if (-d $request_filename) {
                 rewrite [^/]$ $http_x_forwarded_proto://$http_host$uri/ redirect;