Buildah Container Image Builder

Buildah is an open source command-line tool that facilitates building OCI-compatible container images without requiring a full container runtime or daemon. Maintained by the containers organization and primarily developed by Red Hat engineers including Dan Walsh, the tool is part of the broader Podman ecosystem alongside Skopeo and CRI-O. The latest version 1.44.0 was released in May 2026. Unlike Docker which requires a running daemon and uses Dockerfiles exclusively, Buildah provides a flexible scripting approach where each step of the image build process is a discrete command that can be composed in shell scripts, Makefiles, or any automation framework. This enables fine-grained control over the build process and allows developers to create container images without Dockerfiles when needed. Buildah supports building images using Dockerfiles for compatibility, using its native scripting commands (from, run, copy, config, commit), or using the buildah bud command for Dockerfile builds. The tool produces OCI-compliant images that work with any OCI-compatible runtime including Podman, Docker, containerd, and CRI-O. Buildah is particularly valuable in CI/CD pipelines and Kubernetes-based build systems where running a Docker daemon is impractical or prohibited. The project is written in Go, licensed under Apache 2.0, and available on most Linux distributions through native package managers.