flatpak-builder --sandbox --force-clean  build-dir io.github.JakubMelka.Pdf4qt.json 


flatpak-builder --repo=repo --sandbox --force-clean  build-dir io.github.JakubMelka.Pdf4qt.json 

flatpak build-bundle repo io.github.JakubMelka.Pdf4qt.flatpak io.github.JakubMelka.Pdf4qt