How to Self-Host Coolify on Contabo (2026): The Official Install Script, Which Cloud VPS, and the Sign-Up Page to Lock First

Self-host Coolify on a Contabo VPS, SiftGuide guide

Self-host Coolify, the free open-source alternative to Heroku and Vercel, on a Contabo VPS: the four Cloud VPS plans Contabo suggests with euro prices, how much RAM you need, the official install script (Contabo says it is not a 1-click app), the open sign-up page to lock first, the ports to open, and Coolify Cloud vs self-hosted (October 2026).