Glossary term
What is image digest? Meaning for developers
The SHA-256 fingerprint of an exact image, which never changes for the same content (unlike a tag).
Learn it properly · Docker & KubernetesLesson 0: Why Containers: Images, Containers and How They Differ From VMsThe problem containers solve, namespaces and cgroups in plain words, images versus containers, registries, and the first docker run.