Docker update checker does not support private OCI registry using host:port

I am seeing a Docker update-check issue with a self-hosted Gitea OCI/container registry.

Registry/image names:

192.168.0.55:3001/vessosa/my-api:latest

192.168.0.55:3001/vessosa/my-web:latest

What works:

• docker login 192.168.0.55:3001 works

• docker pull 192.168.0.55:3001/vessosa/my-api:latest works

• docker pull 192.168.0.55:3001/vessosa/my-web:latest works

• containers run correctly after manual pull/recreate

• the registry is a self-hosted Gitea registry using standard Docker/OCI image support

What does not work:

• Unraid Docker UI shows "not available" for the version/update status

• Unraid does not reliably detect whether the local container is up to date

• Force Update does not behave like a normal registry update check unless the image was already manually pulled from

CLI

Expected behavior:

Unraid should support private OCI registries using host:port image references and compare the running container image digest/ID against the remote tag digest. It should show "up-to-date" or "update available" instead of "not available".

Possible cause:

The image reference contains two ":" characters:

192.168.0.55:3001/vessosa/my-api:latest

The first ":" is the registry port.

The final ":" is the image tag separator.

It looks similar to this older report:

https://forums.unraid.net/bug-reports/stable-releases/61210-cant-update-docker-container-with-port-in-url-r2585/

That report appears archived/locked, so I am opening a new one with a current reproduction using Gitea.

diagnostics-20260710-1523.7z