worker_processes auto;
pid /tmp/nginx.pid;
error_log /dev/stderr warn;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;
    access_log /dev/stdout;
    sendfile on;
    server_tokens off;

    # All runtime writes go to /tmp, allowing a read-only container filesystem.
    client_body_temp_path /tmp/client_temp;
    proxy_temp_path /tmp/proxy_temp;
    fastcgi_temp_path /tmp/fastcgi_temp;
    uwsgi_temp_path /tmp/uwsgi_temp;
    scgi_temp_path /tmp/scgi_temp;

    # Precompressed at build time; uncompressed clients receive the original.
    gzip_static on;
    gzip_vary on;

    server {
        listen 8080;
        listen [::]:8080;
        root /usr/share/nginx/html;
        index index.html;
        add_header X-Content-Type-Options nosniff always;

        location = /healthz {
            access_log off;
            default_type text/plain;
            return 200 "ok\n";
        }

        location = /index.html {
            add_header Cache-Control no-cache always;
            add_header X-Content-Type-Options nosniff always;
        }

        # Trunk gives these files content hashes. Missing assets must be 404s,
        # never an HTML fallback or an error cached for a year.
        location ~ \.(wasm|js)$ {
            types { application/wasm wasm; text/javascript js; }
            add_header Cache-Control "public, max-age=31536000, immutable";
            add_header X-Content-Type-Options nosniff always;
            try_files $uri =404;
        }

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