Update Dockerfile

Dockerfile

@@ -1,5 +1,7 @@
 FROM node:22-alpine as builder
 
+ARG VITE_APP_WS_SERVER_URL=http://room:8888/
+
 WORKDIR /app
 COPY . .
 
@@ -11,4 +13,4 @@ RUN pnpm build
 FROM nginx
 COPY ./nginx.conf /etc/nginx/nginx.conf
 COPY --from=builder /app/dist /var/www/html
-EXPOSE 80
+EXPOSE 80