OpenGraph Image url relative when using Cloud storages

[Sebobo]

This happens for example when using Flownative Beach.
It provides a relative url instead of an absolute image url.

This should maybe be solved there or we somehow process the image url and force it to be absolute if its relative.
But we wouldn't know here if the final url is actually correct.
The alternative is having a variable for a custom url prefix or using the baseUri.