Multiple Token on same Registry

[ermanno00]

Is your feature request related to a problem? Please describe.

I have two projects on my gitlab that are in different groups so I generated two deploy tokens on which each one has the permission to read his own registry.

My config.json file is:

{
"auths": {
"registry.gitlab.com/project1": {
"auth": ""
},
"registry.gitlab.com/project2": {
"auth": ""
}
}
}

I have this file under ~/.docker/ and it is working. In fact, when i try to pull a docker compose the image that is on the first repo uses the "token1" while the image that is on the second repo uses the "token2".

If i share or duplicate the same file in watchtower one of the two images won't be pulled because seems that watchtower uses only the first part of the registry (before the first "/").

How can I use multiple token for the same registry?

Describe the solution you'd like

Can you use a different approach to check the registries?

Describe alternatives you've considered

I haven't used alternatives

Additional context

No response

[github-actions]

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[DimmoK]

Hello. Sorry for my bad English.

I use any repositories (by Nexus 3) and this is my config

{
        "auths": {
                "nexus1.server.local:8091": {
                        "auth": "Z********************************************************"
                },
                "nexus2.server.local:8091": {
                        "auth": "d********************************************************="
                }
        }
}

In Nexus1 - 8 images,
In Nexus2 - 1 image.
From log:

docker logs -f ipn_watch
time="2025-06-02T15:56:40+03:00" level=info msg="Watchtower 1.7.1"
time="2025-06-02T15:56:40+03:00" level=info msg="Using no notifications"
time="2025-06-02T15:56:40+03:00" level=info msg="Checking all containers (except explicitly disabled with label)"
time="2025-06-02T15:56:40+03:00" level=info msg="Scheduling first run: 2025-06-02 15:57:40 +0300 MSK"
time="2025-06-02T15:56:40+03:00" level=info msg="Note that the first check will be performed in 59 seconds"
time="2025-06-02T15:57:42+03:00" level=info msg="Session done" Failed=0 Scanned=9 Updated=0 notify=no