Enable back socket.io polling

backend/dockge-server.ts

@@ -195,7 +195,6 @@ export class DockgeServer {
         // Create Socket.io
         this.io = new socketIO.Server(this.httpServer, {
             cors,
-            transports: [ "websocket" ],
         });
 
         this.io.on("connection", async (socket: Socket) => {

frontend/src/mixins/socket.ts

@@ -109,7 +109,7 @@ export default defineComponent({
             }, 1500);
 
             socket = io(url, {
-                transports: [ "websocket" ]
+                transports: [ "websocket", "polling" ]
             });
 
             socket.on("connect", () => {