Config From a File

Load a container's environment from a reviewable env file.

A intermediate Docker challenge worth 10 points. Solve it hands-on in a real Docker environment in your browser - no local setup, no fake shells.

The Challenge

Scenario: The platform team standardized on env files — config in one reviewable place instead of 12 -e flags nobody remembers.

The approved config is at /root/app.env; config-api was started with no config at all.

Tasks:

• Recreate config-api (image alpine, command sleep infinity) loading its environment from that file
• Verify with docker inspect that all three variables landed

Commands to learn: docker run --env-file, docker inspect (Config.Env)

Run check when done.