A backup nobody has restored is only a hope, so DockNest backs up your Docker sites to storage you own and proves each one by restoring it to a private copy. It connects to your Linux servers over SSH and finds the Docker projects and static nginx sites on them. Schedules, retention, and pinned backups are set per site. A Map page draws your servers, sites, and backup storage as connected nodes, and dragging a site to another server moves it, with a backup first and the old copy kept stopped for seven days. Jobs show live progress, a step timeline, and plain-language reasons when something fails. Automatic restore tests bring the latest backup up on a test server and check it. Hardening scores grade each site from A to F with a fix for every finding, and server cleanup previews reclaimable space before anything is removed. Alerts reach Telegram, Slack, Discord, email, ntfy, and many more channels. Backups are encrypted with AES-256-GCM, sign-in needs an authenticator app, and the interface offers light and dark themes plus a phone layout. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.