Install HACS on Home Assistant

HACS gives you a powerful UI to handle downloads of all your custom needs.

Connect to the Home Assistant container and download HACS

sudo docker exec -it homeassistant bash
wget -O - https://get.hacs.xyz | bash -
exit
sudo docker restart homeassistant

Install HACS as an add-on

Go to Settings/Device & Services

Press "Add integration" and search for HACS.

Install HACS and follow the wizard.