Complete Guide to Docker Healthchecks and Restart Policies

Complete Guide to Docker Healthchecks and Restart Policies Your Jellyfin container is running. Docker says it’s healthy. But the web UI returns a blank page and nobody can stream anything. Docker’s default “running” status only tells you the process hasn’t crashed — it says nothing about whether the service actually works. Docker healthchecks fix this. They let you define what “healthy” actually means for each container, and combined with restart policies, they create a self-healing setup where broken services recover automatically without you waking up at 3 AM. ...

March 17, 2026 · 9 min · Self Host Setup