Debian & Ubuntu
Run once, then upgrade with apt like any other package.
curl -fsSL https://pkgs.galtea.ai/public.key | sudo tee /etc/apt/keyrings/galtea.asc > /dev/null
echo "deb [signed-by=/etc/apt/keyrings/galtea.asc] https://pkgs.galtea.ai/apt stable main" | sudo tee /etc/apt/sources.list.d/galtea.list
sudo apt update
sudo apt install galtea