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: 203/490
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.
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: 84/300
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: 150/273