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+
+.. _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
+
+.. _archlinux: https://www.archlinux.org/
+
+.. _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*.  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*).
+
+Before you can start with containers, you need to install and initiate LXD_
+once::
+
+  $ snap install lxd
+  $ lxd init --auto
+
+To make use of the containers from the *searx suite*, you have to build the
+:ref:`LXC suite containers <lxc.sh help>` initial.  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>`.  If you do not want to build all containers, **you can build just
+one**::
+
+  $ sudo -H ./utils/lxc.sh build searx-ubu1804
+
+*Good to know ...*
+
+Eeach container shares the root folder of the repository and the
+command ``utils/lxc.sh cmd`` **handles relative path names transparent**,
+compare output of::
+
+  $ sudo -H ./utils/lxc.sh cmd -- ls -la Makefile
+  ...
+
+In the containers, you can run what ever you want, e.g. to start a bash use::
+
+  $ sudo -H ./utils/lxc.sh cmd searx-ubu1804 bash
+  INFO:  [searx-ubu1804] bash
+  root@searx-ubu1804:/share/searx#
+
+If there comes the time you want to **get rid off all** the containers and
+**clean up local images** just type::
+
+  $ sudo -H ./utils/lxc.sh remove
+  $ sudo -H ./utils/lxc.sh remove images
+
+
+Install suite
+=============
+
+To install the complete :ref:`searx suite (includes searx, morty & filtron)
+<lxc-searx.env>` into all LXC_ use::
+
+  $ sudo -H ./utils/lxc.sh install suite
+
+The command above installs a searx suite (see :ref:`installation scripts`).  To
+get the IP (URL) of the filtron service in the containers use ``show suite``
+command.  To test instances from containers just open the URLs in your
+WEB-Browser::
+
+  $ sudo ./utils/lxc.sh show suite | grep filtron
+  [searx-ubu1604]  INFO:  (eth0) filtron:    http://n.n.n.246:4004/ http://n.n.n.246/searx
+  [searx-ubu1804]  INFO:  (eth0) filtron:    http://n.n.n.147:4004/ http://n.n.n.147/searx
+  [searx-ubu1910]  INFO:  (eth0) filtron:    http://n.n.n.140:4004/ http://n.n.n.140/searx
+  [searx-ubu2004]  INFO:  (eth0) filtron:    http://n.n.n.18:4004/ http://n.n.n.18/searx
+  [searx-fedora31]  INFO:  (eth0) filtron:    http://n.n.n.46:4004/ http://n.n.n.46/searx
+  [searx-archlinux]  INFO:  (eth0) filtron:    http://n.n.n.32:4004/ http://n.n.n.32/searx
+
+To :ref:`install a nginx <installation nginx>` reverse proxy for filtron and
+morty use (or alternatively use :ref:`apache <installation apache>`)::
+
+    sudo -H ./utils/lxc.sh cmd -- FORCE_TIMEOUT=0 ./utils/filtron.sh nginx install
+    sudo -H ./utils/lxc.sh cmd -- FORCE_TIMEOUT=0 ./utils/morty.sh nginx install
+
+
+Running commands
+================
+
+**Inside containers, you can use make or run scripts** from the
+:ref:`toolboxing`.  By example: to setup a :ref:`buildhosts` and run the
+Makefile target ``test`` in the archlinux_ container::
+
+  sudo -H ./utils/lxc.sh cmd searx-archlinux ./utils/searx.sh install buildhost
+  sudo -H ./utils/lxc.sh cmd searx-archlinux make test
+
+
+Setup searx buildhost
+=====================
+
+You can **install the searx buildhost environment** into one or all containers.
+The installation procedure to set up a :ref:`build host<buildhosts>` takes its
+time.  Installation in all containers will take more time (time for another cup
+of coffee).::
+
+  sudo -H ./utils/lxc.sh cmd -- ./utils/searx.sh install buildhost
+
+To build (live) documentation inside a archlinux_ container::
+
+  sudo -H ./utils/lxc.sh cmd searx-archlinux make docs-clean docs-live
+  ...
+  [I 200331 15:00:42 server:296] Serving on http://0.0.0.0:8080
+
+To get IP of the container and the port number *live docs* is listening::
+
+  $ sudo ./utils/lxc.sh show suite | grep docs-live
+  ...
+  [searx-archlinux]  INFO:  (eth0) docs-live:  http://n.n.n.12:8080/
+
+
+.. _lxc.sh help:
+
+Overview
+========
+
+The ``--help`` output of the script is largely self-explanatory:
+
+.. program-output:: ../utils/lxc.sh --help
+
+
+.. _lxc-searx.env:
+
+searx suite
+===========
+
+.. literalinclude:: ../../utils/lxc-searx.env
+   :language: bash