Private Repos: Now that I have a build via Automated Build, how do I pull it down?

I signed up private repositories on Docker and created one via the GitHub integration. It was able to build via the AutomatedBuild. However, I can’t get the pull request to work. I am using Boot2Docker and the command “docker pull username/reponame” I am receiving the error message: Error: image username/reponame/latest not found. I am guessing it is a security problem and can’t find the image because the repo is private. How do I resolve this so I can pull down my nice, new build?

I was able to get it working via the “docker login” command. It did not want to work at first. After about 4 or 5 tries, it finally logged me in and created the docker.cfg file. I was then able to access my private repo.