If you work in a large company, for security reasons you may already be required to use in-house mirrors of libraries or container images. There are commercial

If you work in a large company, for security reasons you may already be required to use in-house mirrors of libraries or container images. There are commercial products for doing this, e.g. https://jfrog.com/artifactory/ https://jfrog.com/artifactory/ All the command line package management tools then need to be configured to point at the custom in-house package mirror, rather than connecting to the default public package server over the internet.