Support imageFile in Podman module

[billy4479]

Description

In the NixOS module for oci-containers it is possible to specify an imageFile for each container, it would be nice to have a similar option for home-manager podman module as well, something like

services.podman.containers.my-container = {
  # ...
  imageFile = pkgs.dockerTools.buildImage {...};
  # ...
};

Thank you!

[bamhm182]

I have added support for Build, Image, and Volume quadlets in this PR, but it hasn't been merged yet.

When creating issue, please CC the maintainers so we get a notification and actually see the issue. Otherwise, it just a coincidence that we see it until someone else CC's us.

@n-hass

[billy4479]

Oops, sorry, this is my first time creating an issue in a nix related project, my bad. Also I couldn't find your PR when I searched before opening this issue, sorry again. Feel free to close whenever.

[bamhm182]

All good! Just wanted to point out that CC'ing helps you get the people who need to look at it in the convo. I believe you have the ability to close it.