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Diffstat (limited to 'docs/source/markdown/podman-run.1.md')
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diff --git a/docs/source/markdown/podman-run.1.md b/docs/source/markdown/podman-run.1.md index 63224b49d..3a6803aaa 100644 --- a/docs/source/markdown/podman-run.1.md +++ b/docs/source/markdown/podman-run.1.md @@ -883,6 +883,16 @@ If specified, the first argument refers to an exploded container on the file sys This is useful to run a container without requiring any image management, the rootfs of the container is assumed to be managed externally. + `Overlay Rootfs Mounts` + + The `:O` flag tells Podman to mount the directory from the rootfs path as +storage using the `overlay file system`. The container processes +can modify content within the mount point which is stored in the +container storage in a separate directory. In overlay terms, the source +directory will be the lower, and the container storage directory will be the +upper. Modifications to the mount point are destroyed when the container +finishes executing, similar to a tmpfs mount point being unmounted. + Note: On **SELinux** systems, the rootfs needs the correct label, which is by default **unconfined_u:object_r:container_file_t**. @@ -1791,6 +1801,12 @@ $ podman run -v /var/lib/design:/var/lib/design --group-add keep-groups ubi8 $ podman run --name container1 --personaity=LINUX32 fedora bash ``` +### Run a container with external rootfs mounted as an overlay + +``` +$ podman run --name container1 --rootfs /path/to/rootfs:O bash +``` + ### Rootless Containers Podman runs as a non root user on most systems. This feature requires that a new enough version of **shadow-utils** |