Challenge, Medium, on
Transfer Container Images to an Air-Gapped Environment
Get container images onto a server that has no route to the Internet or access to a container registry.
Submissions: 16/19
Challenges
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.
Official Collection
Challenges crafted by iximiuz Labs to help you master DevOps and Server Side topics.
Challenge, Medium, on
Inspect a Container Image Without Pulling It
Explore the OCI image index, manifests, and configuration of a remote multi-platform image - without pulling a single byte of filesystem layers into the local Docker daemon.
Submissions: 14/16
A Simple Sandbox Breakout: Spot It and Stop It
Investigate a potentially compromised CI host. A sandboxed "agent" running in the background is suspected of breaking out - confirm the breach and neutralize it without taking the sandbox down.
Submissions: 15/45
Challenge, Medium, on
Build a Container Image for Another Platform Using a Remote Builder
Learn how to build container images for non-native CPU architectures by offloading the build to a remote machine using Docker Buildx.
Submissions: 29/47
Community Collection
Challenges contributed by the community members sharing their knowledge and expertise.
Challenge, Medium, on
Hardening Docker Containers Using gVisor Runtime
by Omkar Shelke
Configure Docker to use gVisor (runsc) as the default runtime and verify kernel isolation between the host and containers.
Submissions: 8/9