NGINX installation with Let's Encrypt

example.com

server {
    root                /var/www/html;

    index               index.html index.htm index.nginx-debian.html;
    server_name         example.com;
    include             /etc/nginx/mime.types; 
}

server {
    if ($host = example.com) {
        return 301 https://$host$request_uri;
    }

    listen              80;
    listen              [::]:80;
    server_name         example.com;
    return              404;
}

install_nginx.sh

#!/bin/bash
# This script is intended to setup the environment for a NGINX Web Server with SSL certificate using Let's Encrypt.

clear

PROJECT_DIR="/etc/nginx/sites-enabled"
CURRENT_DIR=$(pwd)
DOMAIN="example.com"
EMAIL="[email protected]"

# Get latest updates
echo ""
echo "UPDATING SYSTEM..."
echo ""
sudo apt update

echo ""
echo "###### RUNNING NGINX SCRIPT ######"
echo ""

function install_nginx
{
	SOFTWARE="nginx"
	QUERY="$(sudo dpkg-query -l | grep ${SOFTWARE} | wc -l)"

	if [ "$QUERY" -eq 0 ]; then
		echo ""
		echo "INSTALLING NGINX..."
		echo ""

		sudo apt -y install $SOFTWARE

		# Setup configuration file
		sudo cp $CURRENT_DIR/$DOMAIN $PROJECT_DIR/$DOMAIN

		# Setup and configure Certbot
		sudo apt -y install certbot python3-certbot-nginx
		sudo certbot --nginx -d $DOMAIN --non-interactive --agree-tos -m $EMAIL
	else
		echo "${SOFTWARE} is already installed. skipping..."
	fi
}

install_nginx