A private mirror of the registries your builds already depend on.
1.14.2docker run -p 8080:8080 registry.pkg-mirror.com/mirror:stable
npm config set registry https://registry.pkg-mirror.com/npm/
curl -fsS https://registry.pkg-mirror.com/health
We build a pull-through cache for the public package registries most build pipelines depend on. Packages are fetched once, verified, stored, and served from inside your own network. The point is not speed, although that is a pleasant side effect; the point is knowing which third-party artefacts entered your builds and still having them when upstream deletes a version.
Read the documentation