docs: add some documentation about the tooling box ./utils/*

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

docs/utils/searx.sh.rst

@@ -5,6 +5,11 @@
 ``utils/searx.sh``
 ==================
 
+.. sidebar:: further reading
+
+   - :ref:`installation`
+   - :ref:`architecture`
+
 To simplify installation and maintenance of a searx instance you can use the
 script :origin:`utils/searx.sh`.  In most cases you will install searx simply by
 running the command:
@@ -14,8 +19,50 @@ running the command:
    sudo -H ./utils/searx.sh install all
 
 The script adds a ``${SERVICE_USER}`` (default:``searx``) and installs searx
-into this user account.  The ``--help`` output of the script is largely
-self-explanatory:
+into this user account.  The installation is described in chapter
+:ref:`installation basic`.
+
+.. _intranet reverse proxy:
+
+Intranet Reverse Proxy
+======================
+
+.. warning::
+
+   This setup is **not** suitable **for public instances**, go on with
+   :ref:`reverse proxy`!
+
+To install searx in your intranet HTTP server use:
+
+.. code::  bash
+
+   sudo -H ./utils/searx.sh apache install
+
+.. tabs::
+
+   .. group-tab:: apache
+
+      .. literalinclude:: ../../utils/templates/etc/apache2/sites-available/searx.conf:uwsgi
+	 :language: apache
+
+      .. tabs::
+
+	 .. group-tab:: Ubuntu / debian
+
+	       .. code-block:: sh
+
+		  $ sudo -H apt install libapache2-mod-uwsgi
+
+	 .. group-tab:: Arch Linux
+
+	    .. code-block:: sh
+
+	       $ sudo pacman -S uwsgi
+
+Overview
+========
+
+The ``--help`` output of the script is largely self-explanatory
+(:ref:`toolboxing common`):
 
 .. program-output:: ../utils/searx.sh --help
-