server {
    listen 80;
    listen [::]:80;
    server_name _;
    root /usr/share/nginx/html;
    index index.html;

    location = /client-metadata.json {
        add_header Access-Control-Allow-Origin *;
        add_header Cache-Control "no-cache";
        try_files $uri =404;
    }

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

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