Challenges

Real production decisions. Defend your call against a senior engineer, then get scored against an answer key. How it works

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3 of 53 challenges

Docker

3

Locked1.6GB Docker Image, 8-Minute Builds. Add Runners?Your image is huge and every code change rebuilds from scratch. A teammate wants to just add more CI runners. Defend how you actually fix it.beginner8 minbeginner8 min
LockedThe Build Is Slow, So Let's Just Add --no-cache to CI?CI Docker builds crept to 11 minutes and once shipped a stale dependency. A teammate wants --no-cache on every build. Defend what you actually do first.beginner9 minbeginner9 min
LockedThe Container Needs Docker, So Mount the Socket and Run --privileged?A CI job needs to build images and a teammate wants to bind-mount the Docker socket and run --privileged to fix permission errors. Defend the safe approach.intermediate12 minintermediate12 min