You can start it with systemctl start podman-auto-update.service It’ll auto update daily at 00:00.

Be aware you need to enable and start podman-auto-update.timer for this to work automatically (ie systemctl enable --now podman-auto-update.timer), this command will just update the images once only.

I don’t think this works for non-system podman images, so you’d have to do systemctl --user enable --now podman-auto-update.timer for each user.

You can use RequiresMountsFor= (eg RequiresMountsFor=/media/storage-volume1) instead of manually adding .mount to After/Requires - you can then use .mount files or fstab as you’re stipulating the path rather than a potentially changeable systemd unit name.

The systemd.mount manpage also strongly recommends using fstab for human added mount points over .mount files.