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First install nginx

sudo apt-get update
sudo apt-get install nginx

It is important, that nginx is not listening to the same port as PrivMX server is listening to (defined in /etc/privmx-team-server/config.json)

Create file with you virtual host /etc/nginx/sites-available/your.domain.com.conf

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

    root /var/www/html;
    index index.html;
    client_max_body_size 10M;
    
    server_name your.domain.com;
    
    location / {
        proxy_pass http://127.0.0.1:PRIVMX_PORT;
        proxy_set_header Host $host;
        proxy_http_version 1.1;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
    }
}

Enable your site

sudo ln -s /etc/nginx/sites-available/your.domain.com.conf /etc/nginx/sites-enabled/

Restart nginx

sudo service nginx restart

That's all!