Watchtower Can't Detect Image in GitHub Packages

[nayakly]

Hey, I've been struggling to get mine working. I'm trying out a simple setup with only a Dockerfile. Happy if you could help me out. Here are the steps I followed:

1. Generate Personal Access Token (Settings > Developer Settings > Personal Access Token)
   Scope: read, write and delete packages (ref: Using Watchtower with github packages #569)

2. Generate Base64
   $ echo "<github-username>:<personal-access-token>" | base64

3. Setup Config file
   $ echo '{"auths": {"ghcr.io": {"auth": "<base64_output>"}}}' > config.json

4. Login to GH Packages
   $ echo "<personal-access-token>" | docker login ghcr.io -u <gh-username> --password-stdin

5. Run Container
   $ docker run -d -p 8081:80 --name <container_name> ghcr.io/<gh-username>/<repo>:<tag>

6. Run Watchtower
   $ docker run -d --name watchtower -v /var/run/docker.sock:/var/run/docker.sock -v $(pwd)/config.json:/config.json containrrr/watchtower --interval 30 ghcr.io/<gh-username>/<repo>:<tag>

I get no errors at any point. But, when I run docker logs watchtower here's what I get

sudo docker logs watchtower
time="2024-04-29T13:37:11Z" level=info msg="Watchtower 1.7.1"
time="2024-04-29T13:37:11Z" level=info msg="Using no notifications"
time="2024-04-29T13:37:11Z" level=info msg="Only checking containers which name matches \"ghcr.io/<gh-username>/<repo>:<tag>\""
time="2024-04-29T13:37:11Z" level=info msg="Scheduling first run: 2024-04-29 13:37:41 +0000 UTC"
time="2024-04-29T13:37:11Z" level=info msg="Note that the first check will be performed in 29 seconds"
time="2024-04-29T13:37:41Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:38:11Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:38:41Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:39:11Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:39:41Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:40:11Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:40:41Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:41:11Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:41:41Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:42:11Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:42:41Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no
time="2024-04-29T13:43:11Z" level=info msg="Session done" Failed=0 Scanned=0 Updated=0 notify=no

Solution: Run Watchtower command should reference the container name
$ docker run -d --name watchtower -v /var/run/docker.sock:/var/run/docker.sock -v $(pwd)/config.json:/config.json containrrr/watchtower --interval 30 <container_name>