Software Repository for Container (SWR) provides easy, secure, and reliable management of Docker container images throughout their lifecycles, featuring image push, pull, and deleting.
You can push, pull, and manage Docker images by using the SWR console, SWR APIs or Docker Command Line Interface (CLI).

Now SWR is a new separate service that provides an own public API and can still be used in Cloud Container Engine directly.

Further information can be found in the SWR area of the Help Center.