git clone https://github.com/jiz4oh/derper.git
cd derper
docker compose up -d
add
{
"Name": "custom",
"RegionID": 900,
"HostName": "YOU_OWN_HOST,CAN BE AN IP",
"CertName": "sha256-raw:YOU_OWN_CERT_KEY", // the `YOU_OWN_CERT_KEY` can be checked in docker logs by `docker logs -f derper`
"InsecureForTests": true // no longer needed after all clients are upgraded to 1.82
}
in https://login.tailscale.com/admin/acls/file