Mount Static Assets from an OCI Image into a Kubernetes Pod
Use Kubernetes image volumes to mount a static HTML artifact into an nginx Pod without an init container or a custom nginx image.
Submissions: 170/250
Challenges
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.
Free Up Disk Space by Removing Unused Docker Volumes
Your Docker host has been in use for a while. Anonymous and named volumes piled up, disk space is tight, and it's time to clean stuff up.
Submissions: 198/484
Challenge, Medium, on
Avoid Data Loss When Running Database Containers: Named vs Anonymous Volumes
Learn the difference between named and anonymous volumes and avoid accidental data loss when upgrading a database container.
Submissions: 82/298
Challenge, Medium, on
Docker Volumes: Upgrade a Containerized App Without Losing Data
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.
Submissions: 146/268