[apt] Install `nginx` instead of `nginx-full`

setup.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
 # Make sure the 'essentials' are installed
-sudo apt install -y nginx-full openssl curl
+# We use `nginx` as the script assumes the script for using nginx.org APT repos has been used (https://git.io/nginx-debian)
+# Using `nginx-full` would in this case use the Debian/Ubuntu repos, which are a few versions behind.
+sudo apt install -y nginx openssl curl
 
 # Get acme.sh for issuing certificates
 curl -L https://get.acme.sh/ | sudo bash