server {
    listen 80 default_server;
    server_name _;

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

    charset utf-8;

    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_comp_level 6;
    gzip_types
        text/plain
        text/css
        text/javascript
        text/xml
        application/javascript
        application/json
        application/xml
        image/svg+xml;

    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;

    location = /healthz {
        access_log off;
        add_header Content-Type text/plain;
        return 200 "ok\n";
    }

    location / {
        try_files $uri $uri/ /index.html;
        add_header Cache-Control "public, max-age=300";
    }

    location ~* \.(css|js|svg|woff2?|ttf|otf|eot|png|jpe?g|gif|webp|ico)$ {
        expires 7d;
        add_header Cache-Control "public, max-age=604800, immutable";
    }
}