Install Unifi Controller on Ubuntu 20.04

Install Ubuntu 20.04

apt update
apt install --yes ca-certificates apt-transport-https wget

echo 'deb https://www.ui.com/downloads/unifi/debian stable ubiquiti' | sudo tee /etc/apt/sources.list.d/100-ubnt-unifi.list
wget -O /etc/apt/trusted.gpg.d/unifi-repo.gpg https://dl.ui.com/unifi/unifi-repo.gpg

apt update
apt install --yes openjdk-8-jre-headless unifi

Open browser and go to https://server_name_or_ip:8443