Docker and CI/CD · Junior · Question 4 of 75

What does `FROM node:22-alpine` do in a Dockerfile?

1Downloads Node.js 22 into the current host machine
✓Correct answer: Sets the base image that the build starts from
3Names the final image node with the tag 22-alpine

Explanation

Every build starts from a base image, here the official Node.js 22 image on Alpine Linux. Your instructions add layers on top of it.

Further reading

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