sudo curl -fsSL https://download.britive.com/keys/britive-keyring.gpg -o /usr/share/keyrings/britive.gpg
sudo chmod 0644 /usr/share/keyrings/britive.gpg
echo "deb [signed-by=/usr/share/keyrings/britive.gpg] https://download.britive.com/deb dev main" | sudo tee /etc/apt/sources.list.d/britive.list
sudo apt update
sudo apt install <package>