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Buildah and Podman are two complementary open-source projects that are available on most Linux platforms and both projects reside at GitHub.com with Buildah here and Podman here. Both, Buildah and Podman are command line tools that work on Open Container Initiative (OCI) images and containers. The two projects differentiate in their specialization. Buildah specializes in building OCI images. Buildah's commands replicate all of the commands that are found in a Dockerfile. This allows building images with and without Dockerfiles while not requiring any root privileges. Buildah’s ultimate goal is to provide a lower-level coreutils interface to build images. The flexibility of building images without Dockerfiles allows for the integration of other scripting languages into the build process. Buildah follows a simple fork-exec model and does not run as a daemon but it is based on a comprehensive API in golang, which can be vendored into other tools.
Features
- Create a working container, either from scratch or using an image as a starting point
- Create an image, either from a working container or via the instructions in a Dockerfile
- Images can be built in either the OCI image format or the traditional upstream docker image format
- Mount a working container's root filesystem for manipulation
- Unmount a working container's root filesystem
- Use the updated contents of a container's root filesystem as a filesystem layer to create a new image
Project Samples
