nginx.conf

server {
    listen 4173;
    server_name localhost;

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

    # Backward compatibility redirects from ENSNode services
    location = /about {
        return 301 /;
    }

    location = /gql/subgraph-compat {
        return 301 /api/subgraph;
    }

    location = /gql/ponder {
        return 301 /;
    }

    # Try to serve the requested URI, then with .html extension, then as directory, or 404
    location / {
        try_files $uri $uri.html $uri/ =404;
    }

    # Custom 404 page
    error_page 404 /404.html;
    location = /404.html {
        internal;
    }

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;

    # No caching for static assets to avoid stale versions
    location ~* \.(jpg|jpeg|png|gif|ico|css|js|svg|woff|woff2|ttf|eot)$ {
        add_header Cache-Control "no-cache, no-store, must-revalidate";
        add_header Pragma "no-cache";
        add_header Expires "0";
    }
}