The files need to be statically hosted, if there's gping to be processing before it can be shown, its not going to work.
Testing. Testing.
https://drive.proton.me/urls/AGZTBPFCQC#x9Py5IEDqV3b
Likely not going to work. But worth a shot.
Discussion
I've used immich. Prism might work too, but I like nostr build because it's easy and scrapes Metadata.
I like immich cause its self hosted, but I'm not sure about the idea of publicly sharing self hosted images, unless that's its only for this purpose, immich is more useful as a backup tool, google photos replacement.