docs: add utils/lxc.sh docs, normalize filtron, morty & searx docs

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

5 files changed, 126 insertions, 31 deletions

diff --git a/docs/utils/filtron.sh.rst b/docs/utils/filtron.sh.rst
index e6d7d6251..40e57aa3c 100644
--- a/docs/utils/filtron.sh.rst
+++ b/docs/utils/filtron.sh.rst
@@ -27,8 +27,8 @@ The script adds a ``${SERVICE_USER}`` (default:``filtron``) and installs filtron
 into this user account:
 
 #. Create a separated user account (``filtron``).
-#. Download and install Go_ binary in users $HOME (``~filtron``).
-#. Install filtron with the package management of Go_ (``go get -v -u
+#. Download and install Go_ binary in user's $HOME (``~filtron``).
+#. Install filtron with the package management from Go_ (``go get -v -u
    github.com/asciimoo/filtron``)
 #. Setup a proper rule configuration :origin:`[ref]
    <utils/templates/etc/filtron/rules.json>` (``/etc/filtron/rules.json``).
@@ -36,6 +36,16 @@ into this user account:
    <utils/templates/lib/systemd/system/filtron.service>`
    (``/lib/systemd/system/filtron.service``).
 
+.. _filtron.sh overview:
+
+Overview
+========
+
+The ``--help`` output of the script is largely self-explanatory
+(:ref:`toolboxing common`):
+
+.. program-output:: ../utils/filtron.sh --help
+
 .. _reverse proxy:
 
 Public Reverse Proxy
@@ -63,14 +73,3 @@ To install searx in your public HTTP server use:
 		  $ sudo -H a2enmod headers
 		  $ sudo -H a2enmod proxy
 		  $ sudo -H a2enmod proxy_http
-
-.. _filtron.sh overview:
-
-Overview
-========
-
-The ``--help`` output of the script is largely self-explanatory
-(:ref:`toolboxing common`):
-
-.. program-output:: ../utils/filtron.sh --help
-
diff --git a/docs/utils/index.rst b/docs/utils/index.rst
index 1c77cbfcd..088586e43 100644
--- a/docs/utils/index.rst
+++ b/docs/utils/index.rst
@@ -15,6 +15,7 @@ developers.
    searx.sh
    filtron.sh
    morty.sh
+   lxc.sh
 
 .. _toolboxing common:
 
diff --git a/docs/utils/lxc.sh.rst b/docs/utils/lxc.sh.rst
new file mode 100644
index 000000000..68577ea13
--- /dev/null
+++ b/docs/utils/lxc.sh.rst
@@ -0,0 +1,79 @@
+
+
+.. _snap: https://snapcraft.io
+.. _snapcraft LXD: https://snapcraft.io/lxd
+.. _LXC/LXD Image Server: https://uk.images.linuxcontainers.org/
+.. _LXC: https://linuxcontainers.org/lxc/introduction/
+.. _LXD: https://linuxcontainers.org/lxd/introduction/
+.. _`LXD@github`: https://github.com/lxc/lxd
+
+.. _lxc.sh:
+
+================
+``utils/lxc.sh``
+================
+
+.. sidebar:: further reading
+
+   - snap_, `snapcraft LXD`_
+   - LXC_,  LXD_
+   - `LXC/LXD Image Server`_
+   - `LXD@github`_
+
+With the use of *Linux Containers* (LXC_) we can scale our tasks over a stack of
+containers, what we call the: *lxc suite*.  Before you can start with
+containers, you need to install and initiate LXD_ once::
+
+  $ snap install lxd
+  $ lxd init --auto
+
+The *searx suite* (:origin:`lxc-searx.env <utils/lxc-searx.env>`) is loaded by
+default, every time you start the ``lxc.sh`` script (you do not need to care
+about).  To make use of the containers from the *searx suite*, you have to build
+the :ref:`LXC suite containers <lxc.sh --help>` first.  But be warned, this
+might take some time::
+
+  $ sudo -H ./utils/lxc.sh build
+
+A cup of coffee later, your LXC suite is build up and you can run whatever task
+you want / in a selected or even in all :ref:`LXC suite containers <lxc.sh
+--help>`.  Each container shares the root folder of the repository and the
+command ``utils/lxc.sh cmd`` handles relative path names *transparent*::
+
+  $ sudo -H ./utils/lxc.sh cmd -- ls -la Makefile
+  ...
+  [searx-ubu2004]   -rw-r--r-- 1 root root 7603 Mar 30 11:54 Makefile
+  [searx-fedora31]  -rw-r--r-- 1 root root 7603 Mar 30 11:54 Makefile
+  [searx-archlinux] -rw-r--r-- 1 root root 7603 Mar 30 11:54 Makefile
+
+With this in mind, you can run :ref:`searx.sh` and install packages, needed by
+searx::
+
+  $ sudo -H ./utils/lxc.sh cmd -- ./utils/searx.sh install packages
+
+And run one of the :origin:`Makefile` targets::
+
+  $ sudo -H ./utils/lxc.sh cmd -- make test.sh
+
+You can install a *buildhost environment* into the containers (time for another
+cup of coffee)::
+
+  $ sudo -H ./utils/lxc.sh install buildhost
+
+If you want to get rid off all the containers, just type::
+
+  $ sudo -H ./utils/lxc.sh remove
+
+To clean up your local images use::
+
+  $ sudo -H ./utils/lxc.sh remove images
+
+.. _lxc.sh --help:
+
+Overview
+========
+
+The ``--help`` output of the script is largely self-explanatory:
+
+.. program-output:: ../utils/lxc.sh --help
+
diff --git a/docs/utils/morty.sh.rst b/docs/utils/morty.sh.rst
index 5ab6ee982..2bdc4d9c8 100644
--- a/docs/utils/morty.sh.rst
+++ b/docs/utils/morty.sh.rst
@@ -1,6 +1,7 @@
 
 .. _morty: https://github.com/asciimoo/morty
 .. _morty's README: https://github.com/asciimoo/morty
+.. _Go: https://golang.org/
 
 .. _morty.sh:
 
@@ -22,7 +23,15 @@ running the command:
    sudo -H ./utils/morty.sh install all
 
 The script adds a ``${SERVICE_USER}`` (default:``morty``) and installs morty_
-into this user account.
+into this user account:
+
+#. Create a separated user account (``morty``).
+#. Download and install Go_ binary in user's $HOME (``~morty``).
+#. Install morty_ with the package management from Go_ (``go get -v -u
+   github.com/asciimoo/morty``)
+#. Setup a systemd service unit :origin:`[ref]
+   <utils/templates/lib/systemd/system/morty.service>`
+   (``/lib/systemd/system/morty.service``).
 
 .. hint::
 
diff --git a/docs/utils/searx.sh.rst b/docs/utils/searx.sh.rst
index 988c08438..905f765dd 100644
--- a/docs/utils/searx.sh.rst
+++ b/docs/utils/searx.sh.rst
@@ -29,45 +29,52 @@ into this user account.  The installation is described in chapter
 
 .. _intranet reverse proxy:
 
-Intranet Reverse Proxy
-======================
+Overview
+========
 
-To install searx in your intranet HTTP server use:
+The ``--help`` output of the script is largely self-explanatory
+(:ref:`toolboxing common`):
 
-.. code::  bash
+.. program-output:: ../utils/searx.sh --help
 
-   sudo -H ./utils/searx.sh apache install
+
+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
+         :language: apache
 
       .. tabs::
 
-	 .. group-tab:: Ubuntu / debian
+         .. group-tab:: Ubuntu / debian
 
-	       .. code-block:: sh
+            .. code-block:: sh
 
-		  $ sudo -H apt install libapache2-mod-uwsgi
+               $ sudo -H apt install libapache2-mod-uwsgi
 
-	 .. group-tab:: Arch Linux
+         .. group-tab:: Arch Linux
 
-	    .. code-block:: sh
+            .. code-block:: sh
 
-	       $ sudo pacman -S uwsgi
+               $ sudo -H pacman -S uwsgi
 
-Overview
-========
+         .. group-tab:: Fedora / RHEL
 
-The ``--help`` output of the script is largely self-explanatory
-(:ref:`toolboxing common`):
+            .. code-block:: sh
 
-.. program-output:: ../utils/searx.sh --help
+               $ sudo -H dnf install uwsgi