Buildah vs KIWI NG
Buildah
buildah.ioKIWI NG
osinside.github.ioSide by side
| Figure | Buildah | KIWI NG |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Container Build Tools | 8.5 (#5) | 8.2 (#10) |
| Image formats | Images can be built in OCI format or the traditional upstream Docker image format. | A prepared root tree can be turned into disk, ISO, or container artifacts. |
| Purpose | Buildah is a command-line tool for building Open Container Initiative (OCI) container images. | KIWI NG is a command-line image builder that creates bootable, reproducible Linux images for virtual machines, cloud platforms, removable media, containers, and specialized deployment targets. |
| Security configuration | Installation guidance warns that short image names can be spoofed and recommends fully qualified image names or pulling by digest to reduce ambiguity. | Image descriptions can import additional CA certificates during a build. |
| Support | The project site points users to tutorials, releases, and a mailing list; it describes maintainers as available to answer Buildah questions on the list. | The project lists an open kiwi-images mailing list and a Matrix room for contact. |
Plans
In their own words
Buildah
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.
KIWI NG
KIWI NG is a free, daemonless command-line image builder for Linux. It turns versioned image descriptions and package repositories into bootable, reproducible artifacts. A prepared root tree can produce disk images, ISO files, or containers for virtual machines, cloud platforms, removable media, and specialized targets. Descriptions define metadata, repositories, packages, users, storage, target configuration, and image types, using config.xml or a .kiwi file. Overlays, archives, and scripts add customization. Documented package managers include apk, apt, dnf4, dnf5, microdnf, pacman, and zypper. Supported distributions include Fedora, CentOS Stream, openSUSE, Ubuntu, Debian, and Arch Linux. Builds support multiple architectures and a local cache backend. Installation is available through distribution packages, Open Build Service, or pip. A recent Linux host, Python 3.9 or newer, Git, and at least 15 GB recommended free disk space are required. QEMU can optionally boot and inspect outputs; GPL-3.0 governs the source.