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

What does `docker compose up --build` add to `up`?

1Builds a new Compose file from the running containers
✓Correct answer: Rebuilds service images before starting the containers
3Builds a production bundle of the app inside each service

Explanation

Without it, Compose reuses an existing image even if the Dockerfile or code changed, a common reason for "my change doesn't show up".

Further reading

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