[6.9.1] Docker Update Check not reliable for external container

+1 for me.

 

I manage my containers with Docker Compose (installed using the instructions here).

Watchtower is keeping my containers up to date and I also get these flaky update available messages.

 

I've crossed checked my images using 

docker images

and the tags all match the reported tags in docker hub.

Still an issue with 6.9.1 Stable.

Edited March 9, 2021 by Thx And Bye

While it may not be the answer you're looking for, by using docker compose, you are bypassing the system the way it is designed to work, and glitches may be expected

While I understand that this isn't the intended way to use container on UnRAID and am transitioning over my stacks from docker-compose at some point, I still think that something as basic as checking if a running container has an update available or not should work. 

Ideally the UnRAID UI would support compose files somewhere in an advanced view directly and then deal with those separately from the rest.

I found a "solution" but I wouldn't call it safe, by mucking with the docker.img file mounted to /var/lib/docker.

The docker update info seems to be saved to /var/lib/docker/unraid-update-status.json

 

First I made sure to update my stacks

I nulled out the "local" and "remote" properties to null and "status" to undef (example below)
 

Quote

"qmcgaw/gluetun:latest": {
  "local": null,
  "remote": null,
   "status": "undef"
 }

 

Then I went back to the Docker tab and hit "Check for Updates" and the statuses went back to "up-to-date"

 

Unsure if it will go back to "apply update" when a new image is available, I'll try to remember to report back

Seems like it will change to "apply update" when a new image is available, but you have to manually update the unraid-update-status.json again to clear it