How to Self-Host Vaultwarden on Contabo (2026): The Cheapest Plan Is Enough, the Lock-Down Steps Are Not Optional

Self-host Vaultwarden on Contabo: plan, setup and backups, SiftGuide guide

Self-host Vaultwarden, the Bitwarden-compatible password server, on Contabo in 2026: why the entry Cloud VPS 4 is plenty, the official Docker Compose + Caddy install, the five lock-down steps (HTTPS, closed sign-ups, hashed admin token, no ports past UFW, off-server backups), and where Contabo’s own tutorial is out of date.