Can't access private dockerhub repo

[achristofferson-bbi]

Hello,

I am trying to run a workflow that is using tower and google as the Env and can't seem to get access to the private dockerhub repo. I have tried setting the credentials with the password and a token but keep getting permission denied/repo does not exist. Is this actually supported or do I need to configure something in google cloud to enable private dockerhub repos?