warmbly/web/nginx.conf

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

    # SPA history fallback: unknown paths serve the app shell so client-side
    # routing works on hard reloads and deep links.
    location / {
        include /etc/nginx/warmbly-security-headers.conf;
        try_files $uri $uri/ /index.html;
    }

    # Never cache the shell or the runtime config, so a redeploy or an env
    # change is picked up on the next load. The hashed assets they point to are
    # cached immutably below.
    location = /index.html {
        include /etc/nginx/warmbly-security-headers.conf;
        add_header Cache-Control "no-store" always;
    }
    location = /config.js {
        include /etc/nginx/warmbly-security-headers.conf;
        add_header Cache-Control "no-store" always;
    }

    location /assets/ {
        include /etc/nginx/warmbly-security-headers.conf;
        add_header Cache-Control "public, max-age=31536000, immutable";
    }

    location = /mail-preview.html {
        include /etc/nginx/warmbly-mail-preview-headers.conf;
        add_header Cache-Control "no-store" always;
    }
}