--- /dev/null
+.PHONY: all
+all:
+ wget -O- https://updates.signal.org/desktop/apt/keys.asc \
+ | sudo apt-key add -
+ echo 'deb [arch=amd64] https://updates.signal.org/desktop/apt xenial main' \
+ | sudo tee -a /etc/apt/sources.list.d/signal-xenial.list
+ sudo apt update && sudo apt install signal-desktop