Docker
Container Image
A container image is a packaged filesystem and configuration used to create containers. It identifies application dependencies and startup behavior, but relies on a compatible runtime and operating-system kernel to execute the workload.
Also known as: Docker image
Why it matters
Packaged dependencies reduce environmental drift while still requiring a compatible execution host.
Practical example
Publish immutable image digests for deployments that must use the exact output tested in CI.
Related terms
Sources
Definition reviewed .
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