server {
    listen 80;
    server_name localhost;
    root /usr/share/nginx/html;
    index index.html;

    # Do not store responses in browser or shared caches (Cloudflare, etc. respect unless overridden)
    add_header Cache-Control "no-store, no-cache, must-revalidate, max-age=0" always;
    add_header Pragma "no-cache" always;

    location = /manifest.webmanifest {
        default_type application/manifest+json;
        add_header Cache-Control "no-store, no-cache, must-revalidate, max-age=0" always;
    }

    location = /sw.js {
        add_header Cache-Control "no-store, no-cache, must-revalidate, max-age=0" always;
    }

    location / {
        try_files $uri $uri/ /index.html;
    }
}