What's already configured out of the box
The one-click deployment runs the official registry:2 container with image layers stored on a persistent volume, so data survives container restarts. The container restarts automatically after a host reboot. By default, registry:2 listens on port 5000 inside the container.
First login and authentication
Docker Registry has no web admin panel of its own — all interaction happens through the docker login, docker push, and docker pull commands, or through the HTTP API directly. Run docker login <your-registry-domain> from any machine with Docker installed, enter the provided credentials once, and Docker caches the token locally for subsequent pushes and pulls.
Storage and cleanup
Every pushed image adds layers to the storage volume, and deleting a tag through the API does not immediately free disk space — it only removes the reference. Actual space reclamation requires running the registry's built-in garbage collection command against its config file, ideally with the registry temporarily set to read-only mode to avoid inconsistencies during the sweep. Because there's no UI for browsing what's stored, listing repositories and tags means querying the /v2/_catalog and /v2/<name>/tags/list API endpoints directly, or using a lightweight third-party frontend pointed at the same instance.







