Portus is an authorization server and a user interface for the next generation of the Docker registry. Portus targets version 2 of the Docker Registry API. The minimum required version of Registry is 2.1, which is the first version supporting soft deletes of blobs. Portus supports the concept of users and teams. Users have their own personal Docker namespace where they have both read (aka docker pull) and write (aka docker push) access. A team is a group of users that have read and write access to a certain namespace. You can read more about this in our documentation page about it.