Podman

Podman is an open-source container engine compatible with the Docker CLI but architected without a long-running root daemon. Containers run as a regular user, in a rootless namespace, with a pod abstraction borrowed from Kubernetes. Podman is the default container engine on Red Hat Enterprise Linux and Fedora.

How it differs from Docker

• Daemonless. No central dockerd service; each podman invocation is a short-lived process.
• Rootless by default. Containers run under the invoking user with user namespaces, reducing privilege exposure.
• Pods. Native concept of a pod (group of containers sharing a network namespace), borrowed from Kubernetes.
• Drop-in CLI. alias docker=podman works for most workflows.
• Systemd integration. podman generate systemd creates unit files for running containers as system services.

Companion tools

• Buildah. Builds OCI images without requiring a Dockerfile.
• Skopeo. Image inspection and registry-to-registry copies.
• Podman Desktop. GUI alternative to Docker Desktop, cross-platform.