[Bug] Pass --secret option when building an image

[inknos]

Hi, thank you very much for taking the time to look into this!

Confirmed your findings. My wrong results came from an old Podman (v3.4.4) that supported --secret locally but not remotely.
Updated to Podman v5.6.2 — secrets are now correctly passed via API.

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Question: Why does your POST request use v5.7.0 in the URL if the latest release is v5.6.2?
Is it related to podman-remote?
Are you using a dev build?

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Should I open a new issue to discuss --ssh?

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In any case, I'm interested in opening a PR for this.
If you don't mind, I will tackle it as soon as I can.

Originally posted by @gsilva00 in #526

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This issue is to track the implementation of ssh to images.build()