That looks fine. Does your watchtower container line look like this:
Or, is there a number where the image name should be? If you see a number, stop your watchtower stack -- followed by a re-pull and redeploy.
Number, rather than name:
After re-pull/re-deploy:
Unfortunately, Watchtower still does not update Portainer.
You're pulling the image from Portainer's repo instead of Docker Hub. They should be the same, but maybe there's an issue with their repo?
After you run watchtower, what do you see in its log?
time="2026-07-25T15:33:21Z" level=info msg="Watchtower 1.20.1 using Docker API v1.55"
time="2026-07-25T15:33:21Z" level=info msg="Using no notifications"
time="2026-07-25T15:33:21Z" level=info msg="Running a one time update"
time="2026-07-25T15:33:23Z" level=info msg="Found new image" container=weatherstar4k image="ghcr.io/netbymatt/ws4kp:latest" new_id=8fd5e04c47ac
time="2026-07-25T15:33:27Z" level=info msg="Found new image" container=adbtuner image="turtletank99/adbtuner:development" new_id=8d7845876e4c
time="2026-07-25T15:33:27Z" level=info msg="Found new image" container=adbtuner3 image="turtletank99/adbtuner:development" new_id=8d7845876e4c
time="2026-07-25T15:33:27Z" level=info msg="Stopping container" container=adbtuner id=22e71d5e342e signal=SIGTERM timeout=30s
time="2026-07-25T15:33:27Z" level=info msg="Stopping container" container=adbtuner3 id=ca46de3726e4 signal=SIGTERM timeout=30s
time="2026-07-25T15:33:27Z" level=info msg="Stopping container" container=weatherstar4k id=1087af0544a4 signal=SIGQUIT timeout=30s
time="2026-07-25T15:33:58Z" level=info msg="Started new container" container=weatherstar4k image="ghcr.io/netbymatt/ws4kp:latest" new_id=266e58dfbcca
time="2026-07-25T15:33:58Z" level=info msg="Started new container" container=adbtuner3 image="turtletank99/adbtuner:development" new_id=95a10ec42a70
time="2026-07-25T15:33:58Z" level=info msg="Started new container" container=adbtuner image="turtletank99/adbtuner:development" new_id=6b6e1300c4c9
time="2026-07-25T15:33:58Z" level=info msg="Update session completed" failed=0 notify=no scanned=17 updated=3
Can’t help with watchtower but just updated my Synology Portainer using the below instructions. Took less than a minute.
It doesn't seem to think that there is anything to update...
time="2026-07-25T16:58:01Z" level=info msg="Watchtower 1.20.1 using Docker API v1.43"
time="2026-07-25T16:58:01Z" level=info msg="Using no notifications"
time="2026-07-25T16:58:01Z" level=info msg="Running a one time update"
time="2026-07-25T16:58:14Z" level=info msg="Update session completed" failed=0 notify=no scanned=14 updated=0
Perhaps it would be better to change to pulling from the Docker Hub. How can I switch that?
Another thing I notice is that there is not a stack for this Portainer container. Is that normal?