Source: https://github.com/leiweibau/Pi.Alert
If installing on LXC you must remove the following file: Guide
/usr/lib/python3.x/EXTERNALLY-MANAGED
Run the following to run installation script
bash -c "$(wget -qLO - https://github.com/leiweibau/Pi.Alert/raw/main/install/pialert_install.sh)"