Nginx Passenger

From: https://www.phusionpassenger.com/library/install/nginx/install/oss/bionic/

 sudo apt-get install -y dirmngr gnupg
 sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 561F9B9CAC40B2F7
 sudo apt-get install -y apt-transport-https ca-certificates

 sudo sh -c 'echo deb https://oss-binaries.phusionpassenger.com/apt/passenger focal main > /etc/apt/sources.list.d/passenger.list'
 sudo apt-get update
 sudo apt-get install -y libnginx-mod-http-passenger

 if [ ! -f /etc/nginx/modules-enabled/50-mod-http-passenger.conf ]; then sudo ln -s /usr/share/nginx/modules-available/mod-http-passenger.load /etc/nginx/modules-enabled/50-mod-http-passenger.conf ; fi

Test:

 sudo ls /etc/nginx/conf.d/mod-http-passenger.conf