Challenge, Medium,  on  Containers
ProblemSolutionDiscussion

The playground has a simple busybox Docker container called labs-are-fun. You should be able to see it in the docker ps output. Can you execute a command (e.g., sleep 10) inside it but using ctr exec instead of docker exec?

Hint 1 💡

Feel a bit lost? Try solving this simpler challenge first. It'll help you fill in the knowledge gaps.

Hint 2 💡

If you followed the advice from the previous hint, you should be able to get the containerd task ID of the labs-are-fun container with ease. The only thing left after that would be getting the ctr task exec parameters right.

Challenge on Containers
Discussion  Discord
containerdctrdocker

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How to Author Challenges on iximiuz Labs

Instead of providing a subpar online editing experience, iximiuz Labs offers a helper CLI tool called labctl, allowing you to use your favorite text editor (or a full-featured IDE) to write content from the comfort of your local machine.

Install labctl CLI

curl -sf https://labs.iximiuz.com/cli/install.sh | sh

This will download and install the latest version of the labctl CLI. You only need to do this once per workstation.

Authorize labctl

labctl auth login

This will open a browser window asking you to authorize labctl to access your account. You need to do it after a fresh install of labctl and repeat it whenever the auth session expires.

Pull challenge content

labctl content pull challenge containerd-docker-exec

This will create a local copy of the challenge content in a directory named containerd-docker-exec. You only need to do this once per challenge.

Stream your changes

labctl content push -fw challenge containerd-docker-exec

Run this command in a separate terminal to continuously upload your changes to the server while editing the challenge in your favorite text editor or IDE.

You can also use labctl to create, list, and delete your content. Learn more about the available commands: labctl content --help