Tiny Flask-based webservice that implements the Docker token server API.

This server is very bare-bones. I needed something to protect a public Docker registry that was Python-based and straightforward to maintain and secure.

• Gives out tokens for "pull" access to all repos for anyone, no password required. This means anonymous users can docker pull from any repository.
• All other actions require a username and password. In other words, docker push requires authentication.
• There is only one username ("admin") and password.