Buildah

Using Buildah with container registries

Prerequisite: Buildah version 0.9 or greater.

First some terminology. In the container image space, Docker popularized two terms:

  • Container image registry
  • Container image repository

The container image registry, or registry, is a shared data store for pushing and pulling container images. It has a well-known API for such requests. Docker Hub is an example of a public registry. Various vendors and developers store their images on Docker Hub. Most organizations I’ve dealt with don’t wish to pull images from a public registry for reasons such as security or network bandwidth usage. Instead they would prefer to use a local private registry.

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