Docker and CI/CD · Junior · Question 10 of 75

What does `docker run -p 8080:3000 my-app` mean?

1Container port 8080 forwards to port 3000 on the host
✓Correct answer: Host port 8080 forwards to port 3000 in the container
3The app may use any port in the range 3000 to 8080

Explanation

The format is host:container. Open http://localhost:8080 and the request reaches the app listening on 3000 inside the container.

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