Prove You're Alive

Add a HEALTHCHECK so orchestrators know when the app actually answers.

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 load balancer kept sending traffic to a dead api container — Docker said "running" because a process existed, but nothing answered HTTP.

Tasks:

• Recreate api (image nginx:alpine, port 8085 → 80) with a healthcheck that requests http://localhost/ every 5s (the image has wget and curl)
• Wait until docker ps shows (healthy)

Commands to learn: docker run --health-cmd --health-interval, docker inspect (.State.Health)

Run check when done.