Subdomains that work.
Locally.

You're building a SaaS platform where each customer gets their own subdomain — acme.myapp.com, beta-corp.myapp.com. In production, it works because DNS and your reverse proxy handle the routing. In development, you can't even resolve acme.myapp.test without editing the hosts file every time you add a tenant.

Donk has two subdomain modes. Wildcard mode resolves *.myapp.test to your server — any subdomain, automatically. Your app reads the Host header and routes to the right tenant. Explicit mode maps specific subdomains to specific servers — api.myapp.test to the backend, admin.myapp.test to the admin panel, ws.myapp.test to the WebSocket gateway.

• Wildcard mode — *.myapp.test resolves automatically. Any subdomain works.
• Explicit mode — map specific subdomains to specific local servers
• Wildcard SSL certificates — HTTPS for every subdomain, no additional config
• Multi-device — subdomains resolve from phones, tablets, other machines on LAN
• Composable — combine wildcard mode on one server with explicit mode on another