Focused, hands-on problems for sharpening your DevOps and server-side skills. Some teach specific concepts while others mirror real-world scenarios. Every challenge includes hints, feedback, and automated solution checks.
Save a container image as an OCI layout, extract its filesystem layers, and mount them together using OverlayFS to get a flat container-like rootfs.
Explore the key container management operations by walking through all the phases of the container lifecycle - from creation to termination and removal.
Learn the difference between named and anonymous volumes and avoid accidental data loss when upgrading a database container.
Learn how to persist the application's on-disk state using a volume so you can replace a container with a newer version while keeping existing data intact.
Learn the difference between stopping and permanently removing containers while operating a personal finance tracker application.
Bring your understanding of Linux containers to the next level - start an Nginx container performing every main step of the process manually.
