podman-*: add page (#8785)

pages/common/podman-image.md

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+# podman image
+
+> Manage Docker images.
+> See also `podman build`, `podman import`, and `podman pull`.
+> More information: <https://docs.podman.io/en/latest/markdown/podman-image.1.html>.
+
+- List local Docker images:
+
+`podman image ls`
+
+- Delete unused local Docker images:
+
+`podman image prune`
+
+- Delete all unused images (not just those without a tag):
+
+`podman image prune --all`
+
+- Show the history of a local Docker image:
+
+`podman image history {{image}}`