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.
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.
Learn how to leverage Docker to copy a container image from one repository to another.
Learn how to perform one of the most basic Docker operations - build and publish a container image.
Learn how to pull container images from different registries using the ctr command.
Learn how to tag and push container images to a remote registry using the ctr command.