server {
    listen 80;
    server_name _;

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

    # Proxy API and WebSocket calls to the backend
    location /api/ {
        proxy_pass         http://backend:8080;
        proxy_http_version 1.1;
        proxy_set_header   Upgrade $http_upgrade;
        proxy_set_header   Connection "upgrade";
        proxy_set_header   Host $host;
        proxy_read_timeout 3600;
    }

    # SPA fallback
    location / {
        try_files $uri $uri/ /index.html;
    }
}