How to authenticate via docker json file ?

[Proger666]

Hello.
trying to authenticate according to the example but got:
/kaniko/.docker/config.json: read /kaniko/.docker/config.json: is a directory
How to push dockerconfig for auth to the runner so kaniko can mount it ?

[int128]

This action passes ~/.docker/config.json to the kaniko container.
Please check if it exists.

[Jerome1337]

Is have the same issue, the config.json is existing but when docker mount it, it becomes a folder (or is failing 🤔).

Here is a cat of the content before kaniko action is started

{
	"auths": {
		"europe-docker.pkg.dev": {
			"auth": "***"
		}
	}
}

Then during the build I have this error

error checking push permissions -- make sure you entered the correct tag name, and that you are authenticated correctly, and try again: checking push permission for "europe-docker.pkg.dev/***/docker/***": resolving authorization for europe-docker.pkg.dev failed: /kaniko/.docker/config.json: read /kaniko/.docker/config.json: is a directory

The volume looks good: -v /home/runner/.docker/config.json:/kaniko/.docker/config.json:ro

Every seems fine but I still have this issue.

FYI, I'm login into GAR using the docker/login-action@v2 action and login is successful.