Install uptime kuma on Ubutu 20.04
$sudo apt update -y && sudo apt upgrade -y
$sudo apt install docker.io -y
$sudo docker volume create uptime-kuma
$sudo docker run -d --restart=always -p 3001:3001 -v uptime-kuma:/app/data --name uptime-kuma louislam/uptime-kuma
Access URL:3001 to start monitor your services
Set up reverse proxy