[venus:pokemonsay server$ brew install --build-from-source nginx🆑
Updating Homebrew...
Warning: You are using macOS 10.13.
We (and Apple) do not provide support for this old version.
You will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Twitter or any other official channels. You are responsible for resolving
any issues you experience while you are running this
old version.

==> Downloading https://nginx.org/download/nginx-1.19.6.tar.gz
######################################################################## 100.0%
==> tar -cJf /usr/local/Cellar/nginx/1.19.6/share/nginx/src/src.tar.xz --options compression-level=9 .
==> ./configure --prefix=/usr/local/Cellar/nginx/1.19.6 --sbin-path=/usr/local/Cellar/nginx/1.19.6/bin/nginx --with-cc-opt=
==> make install
==> Caveats
Docroot is: /usr/local/var/www

The default port has been set in /usr/local/etc/nginx/nginx.conf to 8080 so that
nginx can run without sudo.

nginx will load all files in /usr/local/etc/nginx/servers/.

To have launchd start nginx now and restart at login:
brew services start nginx
Or, if you don't want/need a background service you can just run:
nginx
==> Summary
🍺 /usr/local/Cellar/nginx/1.19.6: 10 files, 2.1MB, built in 1 minute 57 seconds
venus:pokemonsay server$