Publish and consume a reusable GitLab CI/CD component from the CI/CD Catalog
domain: docs.gitlab.com · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Structure the component repository with a templates/ directory containing one YAML file per component and a README documenting its inputs.
Define spec:inputs in each component YAML to declare typed, optionally-required input parameters that consuming pipelines will supply.
Tag a semantic-version release, and for a component meant to be discoverable, enable 'CI/CD Catalog project' in the project's settings so it's indexed in the Catalog.
In a consuming .gitlab-ci.yml, add an include with a component reference like <host>/<component-path>@<version> — a tag, branch, or ~latest for the newest catalog release — and supply input values.
Reference the passed inputs inside the component with the $[[ inputs.NAME ]] interpolation syntax, then validate by running a pipeline that includes the component.
Known gotchas
Components must be version-pinned by tag, branch, or ~latest — omitting a version makes the include unresolvable.
Only projects explicitly marked as a CI/CD Catalog project are indexed for discovery; a project with a templates/ directory can still be included by path even if it never shows up in the Catalog UI.
Renaming or removing a declared spec:inputs entry is a breaking change for every downstream pipeline pinned to that version — treat input names as a public API.
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