Bug: Prexisting docker logins take precedence over sc docker logins

[BenjiMilan]

Problem/Opportunity

If you have previously docker logged into a registry and then sc docker login to the same registry sc docker will attempt to use the docker credentials.

This can cause unexpected breakages where you have expired credentials for example in your .docker/config.json

Steps to reproduce

docker login ghcr.io (with bad credentials)
sc docker login ghcr.io/<registry> (with good credentials)

sc docker run ghcr.io/<registry>/<image>
Docker error: bad credentials

Expected Behavior

sc docker login credentials should be prioritised over docker login credentials.

Actual Behavior

docker login credentials are prioritised over sc docker login credentials

Notes (Optional)

No response