Learn how to simplify container image management with this step-by-step guide.

GitLab is a complete DevOps platform delivered as a single application, offering integrated tools for version control, CI/CD, issue tracking, and collaboration. Users can learn about GitLab's DevOps workflow, CI/CD pipelines, and collaboration features to streamline their software development lifecycle and accelerate delivery.

GitLab

GitLab's Container Virtual Registry is a pull-through cache that consolidates multiple upstream container registries (Docker Hub, Docker Hardened Images at dhi.io, MCR, Quay) behind a single endpoint. Platform engineers configure upstreams once with centralized credentials, and all CI/CD pipelines pull through one URL. The post walks through setup using a Python client API: creating a virtual registry, adding upstreams with optional auth, and updating .gitlab-ci.yml to use the single endpoint. Benchmark results show cached pulls cut pull times roughly in half (e.g., Alpine from 10.3s to 4.2s). The feature is currently in beta and supports configurable cache validity periods, with UI-based configuration also available.

GitLab Container Virtual Registry with Docker Hardened Images

Why this matters for Docker Hardened Images