Buildah vs Podman

Buildah is a free command-line tool for building OCI container images on Linux. It can create images from working containers, Dockerfiles, or Containerfiles, and can also build through commands and scripts without a build file. Output can use OCI format or the traditional upstream Docker image format. Builds can run without root privileges, and Buildah follows a fork-exec model rather than running as a daemon. Its commands create, mount, unmount, delete, and rename working containers, as well as create or delete images; users can also pull images from a specified location and push local images elsewhere. Buildah is based on a Go API that other tools can vendor, and Podman uses it for Dockerfile builds while remaining independently installable. Buildah requires a kernel with OverlayFS or fuse-overlayfs support; RHEL or CentOS requires version 7.4 or later. Installation guidance warns that short image names can be spoofed and recommends fully qualified names from trusted registries or pulling by digest. The project points users to tutorials, releases, and a mailing list for questions.

Podman manages containers, pods, and images, with workflows for finding, running, building, and sharing container workloads. It is a free, daemonless container engine with a command line comparable to Docker’s CLI; most commands can run as a regular user without additional privileges. Podman Desktop adds a graphical application for installing and working with Podman and other container engines on Windows, macOS, and Linux. It can build images from Dockerfiles or Containerfiles, pull images from remote repositories, and manage accounts for pushing images to registries. Podman can run Kubernetes YAML locally, generate YAML from pods, and deploy to existing Kubernetes environments. It can find and pull containers from Docker Hub, Quay.io, internal registries, or vendors. On macOS and Windows it listens for Docker API clients. The project lists integrations including Visual Studio Code, Cirrus CLI, GitHub Actions, and kind. Podman is licensed under Apache License 2.0. Its security foundations include rootless and daemonless containers, SELinux support, network policy enforcement, and immutable containers.