2021
https://linuxiac.com/install-and-configure-nginx/
2018
https://proglib.io/p/nginx/

sudo systemctl enable nginx.service


Depends: nginx-core (<< 1.18.0-6ubuntu14.1~) |
         nginx-full (<< 1.18.0-6ubuntu14.1~) |
         nginx-light (<< 1.18.0-6ubuntu14.1~) |
         nginx-extras (<< 1.18.0-6ubuntu14.1~), nginx-core (>= 1.18.0-6ubuntu14) |
         nginx-full (>= 1.18.0-6ubuntu14) | 
         nginx-light (>= 1.18.0-6ubuntu14) | 
         nginx-extras (>= 1.18.0-6ubuntu14)
Breaks: libnginx-mod-http-lua (<< 1.18.0-6ubuntu5)

This is a dependency package to install either
    nginx-core (by default),
    nginx-full,
    nginx-light or
    nginx-extras.