We would like to build and test our application using flatpak. So the idea is that a build machine would build the .flatpak self countained file that another machine could then use to run automated tests on our application. Once we are happy the tests are good then we would like to upload this prebuilt and tested flatpak file to flathub for publication.
However, it seems the flatpak publishing can only be done by building again on the flathub servers (which may result in something slightly different to what we tested). We also don’t need to build again as we already did that as part of our own local build process.
So ideally, we would just upload the flatpak file to flathub when we want to publish our update.
Is this possible?