Authentication for Google Services

If your Datalab is set up with gcloud command (gcloud datalab create), then you don't need to sign in from inside Datalab. Compute service account of your hosting GCP project will be used to access Google Services.

If you want to use your user credential, you can run the Datalab container image locally with Docker. See

https://github.com/googledatalab/datalab/wiki/Getting-Started

for how to build and run it locally. After it is up and running, you can sign in inside Datalab from the menu, go through with OAuth flow, and then you can access Google Services with your own credential.