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@@ -1,6 +1,7 @@  # libpod - library for running OCI-based containers in Pods +### Latest Version: 0.9.1 ### Status: Active Development ## What is the scope of this project? @@ -63,12 +64,44 @@ Release notes for recent Podman versions **[Contributing](CONTRIBUTING.md)** Information about contributing to this project. -### Current Roadmap +## Current Roadmap -1. Varlink API for Podman +1. Python frontend for Varlink API 1. Integrate libpod into CRI-O to replace its existing container management backend -1. Pod commands for Podman -1. Rootless containers -1. Support for cleaning up containers via post-run hooks - -[spec-hooks]: https://github.com/opencontainers/runtime-spec/blob/v1.0.1/config.md#posix-platform-hooks +1. Further work on the podman pod command +1. Further improvements on rootless containers +1. In-memory locking to replace file locks + +[spec-hooks]: https://github.com/opencontainers/runtime-spec/blob/v2.0.1/config.md#posix-platform-hooks + +## Buildah and Podman relationship + +Buildah and Podman are two complementary Open-source projects that are available on +most Linux platforms and both projects reside at [GitHub.com](https://github.com) +with Buildah [here](https://github.com/projectatomic/buildah) and +Podman [here](https://github.com/containers/libpod). Both Buildah and Podman are +command line tools that work on 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. Buildah’s goal is also to +provide a lower level coreutils interface to build images, allowing people to build +containers without requiring a Dockerfile. The intent with Buildah is to allow other +scripting languages to build container images, without requiring a daemon. + +Podman specializes in all of the commands and functions that help you to maintain and modify +OCI images, such as pulling and tagging. It also allows you to create, run, and maintain those containers +created from those images. + +A major difference between Podman and Buildah is their concept of a container. Podman +allows users to create "traditional containers" where the intent of these containers is +to be long lived. While Buildah containers are really just created to allow content +to be added back to the container image. An easy way to think of it is the +`buildah run` command emulates the RUN command in a Dockerfile while the `podman run` +command emulates the `docker run` command in functionality. Because of this and their underlying +storage differences, you can not see Podman containers from within Buildah or vice versa. + +In short Buildah is an efficient way to create OCI images while Podman allows +you to manage and maintain those images and containers in a production environment using +familiar container cli commands. For more details, see the +[Container Tools Guide](https://github.com/projectatomic/buildah/tree/master/docs/containertools). |