Running Signal using distrobox on Silverblue
There is no official Signal build for Fedora. One can use an unofficial RPM or an unofficial FlatPak, but the only official build is for Debian.
Distrobox should let us run Signal in a Debian container.
distrobox create --image quay.io/toolbx-images/debian-toolbox:13 --name debian
distrobox enter debian
# Follow instructions on https://signal.org/download/linux
distrobox-export --app signal-desktop
exit