Update README.md — container web UI with JSON/MD/PDF export

README.md

@@ -643,10 +643,24 @@ container, shell into the Docker host, shutdown VM. All test options run
 
 ### `webui/app.py`
 
-Minimal web dashboard (Python 3 stdlib only, zero dependencies). Serves on
-port 8080. Features: dark-themed UI with run buttons per playbook, async output
-streaming via `fetch`, JSON report downloads. Handles `POST /api/run` to execute
-playbooks via `docker run` and `GET /reports/<name>` for file downloads.
+Minimal web dashboard for the **Alpine Docker Host VM**. Python 3 stdlib only,
+zero dependencies. Serves on port 8080. Features: dark-themed UI with run buttons
+per playbook, async output streaming, JSON report downloads. Runs playbooks
+via `docker run ansible-node`.
+
+### `webui/container-app.py`
+
+Web dashboard for the **Ansible container** itself. Serves on port 8080. Features:
+dark-themed UI, run buttons, async output, **JSON / Markdown / PDF export**.
+PDF generation via `fpdf2` (pure Python, zero system deps). Markdown via bundled
+`render_report.py`. Started automatically when the container runs with no arguments.
+
+### `scripts/entrypoint.sh`
+
+Container entrypoint. If invoked with no arguments, starts the web UI
+(`container-app.py`). If arguments are given, passes them directly to
+`ansible-playbook`. Enables both `docker run -p 8080:8080 ansible-node` and
+`docker run ansible-node site.yml`.
 
 ### `inventory.ini`