add websocket support for vaultwarden

src/vaultwarden/install-service.sh

@@ -149,6 +149,9 @@ server {
         proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
         proxy_pass http://127.0.0.1:8000;
         proxy_read_timeout 90;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade \$http_upgrade;
+        proxy_set_header Connection "upgrade";
     }
 }