Unable to authorize using Google GAR push image

Question

Hello,

I am trying to set up a pipeline to push docker images to google artifact registry. I always receive the following error.

✖ Docker login error: 500 Server Error for http://host.docker.internal:2375/v1.44/auth: Internal Server Error ("Get "https://europe-west1-docker.pkg.dev/v2/": unauthorized: authentication failed")

I provided the KEY_FILE as a secured repository variable which is a base64 encoded string of the service account json file. In gcp this service accoutn has the artifact registry writer role granted.

Do I miss certain permissions or roles?
Did I provide the KEY_FILE incorrect?

This is the snippet I used:

- pipe: atlassian/google-gar-push-image:0.3.1
variables:
    LOCATION: "my-location"
    PROJECT: "my-project"
    REPOSITORY: "my-docker-repo"
    IMAGE_NAME: ${IMAGE_NAME}

Frederik Vanmolkot_sx4x9q · Accepted Answer

Solved. The base64 encoded value had line breaks. Generating without line breaks solved the issue (base64 -w 0)