Docker and CI/CD · Middle · Question 13 of 75

How is an image digest different from a tag?

1A digest is a shorter, human-friendly alias of a tag
✓Correct answer: A digest is a content hash and never changes; a tag can be moved
3Tags are immutable, while digests change on each pull

Explanation

node:22@sha256:... always resolves to the same bytes. Deploying by digest guarantees you run exactly what was tested.

Further reading

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