Pass google default application credentials in local docker run

Question

Is there a way of passing my local google default application credentials (https://developers.google.com/identity/protocols/application-default-credentials) via docker run?

My usecase:

• Code running locally on my machine correctly handles default application credentials
• Code running within docker image on the GCE instance also correctly handles the default application credentials
• The problem is with "docker run" on my machine. Code running in the docker container do not use host default application credentials.

It would be nice if I could tell "docker run" to pass the host google default application credentials to the docker image.

Answer 1

Passing -v ~/.config:/root/.config should make it work. This assumes that your local code uses application default credentials stored by gcloud auth login in ~/.config/gcloud and that the user's home directory in the container is /root.