I’m one step further: I updated the value to the base64 encoded version of

<username>:<personal access token>

. When testing locally with a

~/.docker/config.json

, the error is gone and I can retrieve images on my Mac. The credentials from the keychain are fully disabled. But I still can’t retrieve the private images on Kubernetes. It still has the base64 error message. According the Docker docs:

personal access tokens can now be used as a substitute for your password in Docker Hub

https://www.docker.com/blog/docker-hub-new-personal-access-tokens/

Solved! Note to self: first base64 encode the secret in the form of

<username>:<personal access token>

, then use that value as the

value

in the example above.