Make WS path in lighttpd mode configurable

src/webSockets/WebSockets.js

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020-2021 CZ.NIC z.s.p.o. (http://www.nic.cz/)
+ * Copyright (C) 2020-2022 CZ.NIC z.s.p.o. (http://www.nic.cz/)
  *
  * This is free software, licensed under the GNU General Public License v3.
  * See /LICENSE for more information.
@@ -10,8 +10,10 @@
 const PROTOCOL = window.location.protocol === "http:" ? "ws" : "wss";
 
 const URL = process.env.LIGHTTPD
-    ? `${PROTOCOL}://${window.location.host}/foris-ws`
-    : `${PROTOCOL}://${window.location.hostname}:${9081}`;
+    ? `${PROTOCOL}://${window.location.host}/${
+          process.env.WSPATH || "foris-ws"
+      }`
+    : `${PROTOCOL}://${window.location.hostname}:9081`;
 
 const WAITING_FOR_CONNECTION_TIMEOUT = 500;