HEADSCALE_URL=https://tailscale.example.com
API_KEY=abcdefghijklmnopqrstuvwxyz
COOKIE_SECRET=abcdefghijklmnopqrstuvwxyz
OIDC_CLIENT_ID=headscale
OIDC_ISSUER=https://sso.example.com
OIDC_CLIENT_SECRET=super_secret_client_secret
DISABLE_API_KEY_LOGIN=true