server {
    listen 8081;
    root /app;
    index index.html;

    location /healthz { access_log off; return 200 'ok'; }

    location /api {
        proxy_http_version 1.1;
        proxy_pass_request_headers on;
        proxy_hide_header Access-Control-Allow-Origin;
        proxy_buffering off;
        proxy_pass http://backend:8090;
    }

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