Reference: https://flathub.org/apps/org.flatpak.Builder
flatpak run --command=flatpak-builder-lint org.flatpak.Builder manifest org.octave.Octave.yaml
flatpak run org.flatpak.Builder --force-clean --sandbox --user --install --install-deps-from=flathub --ccache --mirror-screenshots-url=https://dl.flathub.org/media/ --repo=repo builddir org.octave.Octave.yaml
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ostree commit --repo=repo --canonical-permissions --branch=screenshots/x86_64 builddir/files/share/app-info/media -
flatpak run --command=flatpak-builder-lint org.flatpak.Builder repo repo