server {
    listen 8080 default_server;
    listen [::]:8080 default_server;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;
    charset utf-8;
    server_tokens off;
    autoindex off;
    access_log off;

    add_header Strict-Transport-Security "max-age=31536000" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "DENY" always;
    add_header X-Permitted-Cross-Domain-Policies "none" always;
    add_header Referrer-Policy "no-referrer" always;
    add_header Permissions-Policy "camera=(), microphone=(), geolocation=(), payment=(), usb=(), browsing-topics=()" always;
    add_header Cross-Origin-Opener-Policy "same-origin" always;
    add_header Cross-Origin-Resource-Policy "same-origin" always;
    add_header Content-Security-Policy "default-src 'self'; base-uri 'none'; form-action 'none'; frame-ancestors 'none'; object-src 'none'; script-src 'self'; style-src 'self' 'unsafe-inline'; font-src 'self'; img-src 'self' data:; connect-src 'self'; media-src 'self'; manifest-src 'self'; worker-src 'none'; upgrade-insecure-requests" always;

    if ($request_method !~ ^(GET|HEAD)$) {
        return 405;
    }

    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css application/javascript application/json application/manifest+json image/svg+xml;

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

    location = /index.html {
        expires -1;
        try_files $uri =404;
    }

    location ~* \.(?:css|js|png|jpe?g|gif|svg|ico|webmanifest)$ {
        expires 1h;
        try_files $uri =404;
    }

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

    error_page 404 /404.html;

    location = /404.html {
        internal;
    }
}