Login to docker.io failed. (`expected acArg to be "docker.io", got "registry-1.docker.io"`) about nerdctl HOT 2 OPEN

@fahedouch PTAL

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whats the differance betwen these commands? Is this a bug?

I would say yes (because docker works fine in that case).

I do not know why we do this check - maybe there was a security reason to make sure we do not return credentials for a different host.

I would like to rewrite most of our login code (as there are a lot of issues - #3072) but that will take some time.

If @fahedouch knows and can comment on the reason for the acArg / host check, and if we can soften it to maybe the main domain + tld, that could be a fix.

Alternatively, we could match the registry param if *.docker.io -> replace with index.docker.io.

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