# caddy `site.caddy` routes `{$FIREFLY_UI_DOMAIN}` to the project over the external `caddy` network. In a shared Caddy, mount this directory as `/etc/caddy/projects.d/firefly-ui:ro` and set `FIREFLY_UI_DOMAIN`. Keep it portable: domain only from the env, no `tls`, snippets prefixed with `firefly_ui_`.