server {
    listen 80;
    root /usr/share/nginx/html;
    index index.html;

    resolver 127.0.0.11 valid=10s;

    location /ws {
        set $server_upstream http://server:4474;
        proxy_pass $server_upstream;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_read_timeout 3600s;
    }

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