Focused hands-on problems designed to help you hone your DevOps or Server Side skills. Some challenges are more educational, while others are based on real-world scenarios. The platform provides hints and feedback for each challenge, including automated solution checks.
Set up your own OCI-compatible container registry with username/password authentication and HTTPS - the kind of protection you'd expect before using a registry in production.
Stand up a self-hosted container registry so you can push and pull images without relying on a third-party registry. Useful for tests, internal services, air-gapped environments, or just for poking at the OCI Distribution API.
Get container images onto a server that has no route to the Internet or access to a container registry.
Explore the OCI image index, manifests, and configuration of a remote multi-platform image - without pulling a single byte of filesystem layers into the local Docker daemon.
Save container images as OCI layouts and explore the on-disk structure of single-platform (manifest-based) and multi-platform (index-based) images.
Learn how to build and publish an uncompressed container image - a helpful trick to optimize disk I/O for large images, especially when you can benefit from a fast internal network.
Learn how to copy all image tags from one repository to another in an efficient way.
Learn how to copy a multi-platform image from one repository to another using the docker manifest command or other, more convenient, tools like crane, skopeo, or regctl.
Learn how to copy a container image from one repository to another without using Docker, Podman, or any other container runtime.
