The guide below describes how to install the Nginx web server on Ubuntu 20.04 LTS
We will do the whole thing through the console in a few minutes.

We start the terminal and update and install the nginx server

sudo apt update

sudo apt install nginx

We add the web server to the firewall:

sudo ufw allow 'Nginx HTTP'

We can verify the status of the Nginx service by issuing the command:

systemctl status nginx

An example result is shown below:

Output
● nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2020-04-20 16:08:19 UTC; 3 days ago
     Docs: man:nginx(8)
 Main PID: 2369 (nginx)
    Tasks: 2 (limit: 1153)
   Memory: 3.5M
   CGroup: /system.slice/nginx.service
           ├─2369 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
           └─2380 nginx: worker process

Now we will start creating the file structure for the vhost:

We create the directory structure:

sudo mkdir -p / var / www / our_domain / html

We give permission:

sudo chown -R $USER:$USER / var / www / our_domain / html

We set chmod

sudo chmod -R 755 /var / www / ourdomain

We create an example index.html of our website to validate our configuration:

nano /var/www/nasza_domena/html/index.html

Contents:

    
        
    
    
        
Success!  Everything works correctly!
    

save the file.

We create a new vhost:

sudo nano /etc/nginx/sites-available/nasza_domena

And the content:

server {
        listen 80;
        listen [::]:80;

        root / var / www / our_domain / html;
        index index.html index.htm index.nginx-debian.html;

        server_name our_domain www.our_domain;

        location / {
                try_files $uri $uri/ =404;
        }
}

We're making a symbolic link:

sudo ln -s /etc/nginx/sites-available/nasza_domena /etc/nginx/sites-enabled/

We edit the nginx configuration file

sudo nano /etc/nginx/nginx.conf

And we uncomment the line:

server_names_hash_bucket_size

The whole should look like:

...
http {
    ...
    server_names_hash_bucket_size 64;
    ...
}
...

restart the nginx server, our vhost should work properly.

sudo systemctl restart nginx