bitwarden-browser/apps/web/config/selfhosted.json

{
  "dev": {
    "proxyApi": "http://localhost:4001",
    "proxyIdentity": "http://localhost:33657",
    "proxyEvents": "http://localhost:46274",
    "proxyNotifications": "http://localhost:61841",
    "port": 8081
  },
  "flags": {}
}