server {
    listen 80;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;

    location / {
        try_files $uri $uri/ /index.html;
    }

    error_page 500 502 503 504 /5x.x.html;
    location = /5x.x.html {
        root /usr/share/nginx/html;
    }
}