Container Registry Management: Tagging, Signing, and Operations

Calendar February 22, 2026
Kubernetes
Intermediate
Registry-Operations, Image-Signing, Imagepullsecrets-Configuration
Container-Registry, Image-Tagging, Cosign, Sigstore, Ecr, Ghcr, Harbor
Docker, Cosign, Crane, Skopeo, Kubectl

Container Registry Management#

A container registry stores and distributes your images. Getting registry operations right – tagging, access control, garbage collection, signing – prevents a class of problems ranging from “which version is deployed?” to “someone pushed a compromised image.”

Registry Options#

Docker Hub – The default registry. Free tier has rate limits (100 pulls per 6 hours for anonymous, 200 for authenticated). Public images only on free plans.

GitHub Container Registry (ghcr.io) – Tight integration with GitHub Actions. Free for public images, included storage for private repos. Authenticate with a GitHub PAT or GITHUB_TOKEN in Actions.