[DOCS] Update save and load docs to make dir loading support clearer

[ninja-quokka]

Podman remote clients don't support loading images from directories, this patch aims to make that clearer.

This patch also aims to make it clearer that podman-load can load from URLs, directories and tar archives.

Fixes: #27952

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Does this PR introduce a user-facing change?

None

[baude]

LGTM

[GadgetSteve]

IMHO these changes do not make it clearer that save formats oci_dir and docker_dir will result in directories that cannot be loaded on Windows with the podman load command - there is some, small, footnote, mention of not being compatible with podman_remote but on Windows the command being used is not podman_remote it is podman.

I feel that this change, with increased emphasis on saving to & load from directories makes it less clear to me personally and possibly to others.

Please consider, in the main text, something like:

podman\-load - Load image(s) from tar archives (all platforms), directories (Linux only), or URLs into container storage.

| **oci-dir**        | A directory using the OCI Image Format (only loadable on Linux Hosts)        |                                    |
| **docker-dir**     | **dir** transport (see **containers-transports(5)**) with v2s2 manifest type (only loadable on Linux Hosts) |

[jankaluza]

LGTM.

[ninja-quokka]

IMHO these changes do not make it clearer that save formats oci_dir and docker_dir will result in directories that cannot be loaded on Windows with the podman load command - there is some, small, footnote, mention of not being compatible with podman_remote but on Windows the command being used is not podman_remote it is podman.

I feel that this change, with increased emphasis on saving to & load from directories makes it less clear to me personally and possibly to others.

Please consider, in the main text, something like:

podman\-load - Load image(s) from tar archives (all platforms), directories (Linux only), or URLs into container storage.

| **oci-dir**        | A directory using the OCI Image Format (only loadable on Linux Hosts)        |                                    |
| **docker-dir**     | **dir** transport (see **containers-transports(5)**) with v2s2 manifest type (only loadable on Linux Hosts) |

Sadly we support Podman remote on Linux hosts so your example isn't 100% correct sadly. I think the foot note is an improvement so I'm going to mark this PR as ready for review (even thought the wonderful Podman maintainers have already started reviewing this patch!)

[ninja-quokka]

/cc @Luap99 @Honny1 <3

[Honny1]

I have only one small nit. Otherwise LGTM.

[github-actions]

A friendly reminder that this PR had no activity for 30 days.

[Honny1]

@ninja-quokka PTAL

[ashley-cui]

@ninja-quokka Friendly ping - if you still have the time for this, a rebase would be necessary when you update it :)

[ninja-quokka]

@ninja-quokka Friendly ping - if you still have the time for this, a rebase would be necessary when you update it :)

Thank you for the ping @ashley-cui !

Rebased and addressed feedback :)

[ashley-cui]

LGTM. Thanks!