server {
    listen 7860;

    location / {
        root /usr/share/nginx/html;
        index index.html index.htm;
        try_files $uri $uri/ /index.html;

        # Standard Security and Proxy Headers
        add_header X-Frame-Options "SAMEORIGIN";
        add_header X-XSS-Protection "1; mode=block";
        add_header X-Content-Type-Options "nosniff";
        
        # Required for many modern web APIs (SharedArrayBuffer, etc) used by Flutter
        add_header Cross-Origin-Embedder-Policy "require-corp";
        add_header Cross-Origin-Opener-Policy "same-origin";
    }

    # Optimization for static assets
    location ~* \.(?:js|css|json|wasm|wav|mp3)$ {
        root /usr/share/nginx/html;
        expires 1y;
        add_header Cache-Control "public";
        access_log off;
    }
}