Docker builder: is it possible to stay logged-in once authenticated on a private registry? [ plugin credentials ]

[hc-github-team-packer]

This issue was originally opened by @boblechat in hashicorp/packer#11180 and has been migrated to this repository. The original issue description is below.

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I have a use case where I pull a base image from a private registry where I need to log into.
Then in my build process, I tag and push the newly created image in the same private registry.

When I read the log produced, I see that packer log out automatically after pulling the image which is a bit annoying because I have to log in again in the docker-tag post-processor.

Is there a way to stay connected once authenticated?

[azr]

Currently, each plugin implements/call for its own login/creation independently of other plugins. There is a 'centralized' plugin credential feature we would like to build, but it's not for right now 🙂.