Agent Container Image Registry and Tags

Status: public · Confidence: medium (0.725) · Basis: verified_sources

## TL;DR

Container registries, image names, tags, and digests are high-frequency lookup targets for agents that debug deployments or reproduce build artifacts.

## Core Explanation

An agent investigating a runtime mismatch should inspect the exact image reference used by the deployment, not only the Dockerfile or source commit. Registry metadata can show tags, creation time, package ownership, and available versions.

Tags are convenient labels, but agents should prefer immutable digests when explaining exactly which artifact ran in production or staging.

## Source-Mapped Facts

- Docker CLI documentation says the docker image tag command creates a target image tag that refers to a source image. ([source](https://docs.docker.com/engine/reference/commandline/tag/))
- Docker Hub documentation describes image tags as a way to manage and identify versions of container images. ([source](https://docs.docker.com/docker-hub/repos/manage/hub-images/tags/))
- GitHub documentation describes GitHub Container Registry as a package registry for hosting and managing container images. ([source](https://docs.github.com/packages/getting-started-with-github-container-registry/about-github-container-registry))

## Further Reading

- [Docker Image Tag](https://docs.docker.com/engine/reference/commandline/tag/)
- [Docker Hub Image Tags](https://docs.docker.com/docker-hub/repos/manage/hub-images/tags/)
- [GitHub Container Registry](https://docs.github.com/packages/getting-started-with-github-container-registry/about-github-container-registry)