Containers without Docker (podman, buildah, and skopeo)

1

Podman

While Docker is commonly the standard when it comes to containers, we're starting to see why alternatives like Podman are quickly becoming popular replacements for container-based development. Although Docker has been around for almost 10 years and standardized containerization, Podman has some huge advantages, namely being "daemonless" (not needing systemd or any other service to run in the background). Are there alternatives to Docker? Yes, and let's take a look at how we can get started with Podman, Buildah, and Skopeo.

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2

runc

This is what Podman, an open-source daemonless and rootless container engine, was developed with in mind. Podman runs using the runC container runtime process, directly on the Linux kernel, and launches containers and pods as child processes. In addition, it was developed for the Docker developer, with most commands and syntax seamlessly mirroring Docker's. Buildah, an image builder, and Skopeo, the image utility tool, are both complimentary to Podman as well, and extend the range of operations able to be performed.

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3

Buildah

This is what Podman, an open-source daemonless and rootless container engine, was developed with in mind. Podman runs using the runC container runtime process, directly on the Linux kernel, and launches containers and pods as child processes. In addition, it was developed for the Docker developer, with most commands and syntax seamlessly mirroring Docker's. Buildah, an image builder, and Skopeo, the image utility tool, are both complimentary to Podman as well, and extend the range of operations able to be performed.

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