content/documentation: README and page

content/documentation/README.md

+# Documentation trees
+
+When releasing a new version, download the artifacts ZIP generated by the
+`docs:build` job in the Knot Resolver repo, extract the `doc/html` directory
+from there into this directory and name it `v<VersionNumber>`. If that version
+is considered stable, re-link the `stable` symlink to it as well.

content/pages/en/documentation.rst

@@ -4,32 +4,40 @@
 :lang: en
 :menuorder: 2
 
+.. The inconsistency in links (sometimes absolute and sometimes relative) is
+   here beceuase 'stable' is a symlink in this repo, while 'latest' is
+   reverse-proxied to GitLab Pages by our frontend server, and thus is not
+   available locally.
+
 Quickstart
 ==========
 
-1. `Install packages <https://knot-resolver.readthedocs.io/en/stable/quickstart-install.html>`_
-2. `Run daemon <https://knot-resolver.readthedocs.io/en/stable/quickstart-startup.html>`_
+1. `Install packages <stable/quickstart-install.html>`_
+2. `Run daemon <stable/quickstart-startup.html>`_
 
 Knot Resolver is now running on localhost and will recursively resolve any
-incoming queries. Now you can query it or `play with its configuration <https://knot-resolver.readthedocs.io/en/stable/quickstart-config.html>`_.
+incoming queries. Now you can query it or `play with its configuration <stable/quickstart-config.html>`_.
 
 Comprehensive documentation
 ===========================
 
-Docs for stable version are available online at
-`knot-resolver.readthedocs.org <https://knot-resolver.readthedocs.org/en/stable>`__.
+Docs for the latest stable version 5 are available online at
+`knot-resolver.cz/documentation/stable <stable>`__.
+
+Docs for the latest early-access version 6.0.x are available online at
+`knot-resolver.cz/documentation/latest <https://knot-resolver.cz/documentation/latest>`__
 
 Offline documentation is also available in *knot-resolver-doc* package for most
 distributions.
 
-*Read the Docs* also offers downloads of
-`PDF <https://readthedocs.org/projects/knot-resolver/downloads/pdf/stable/>`__
-and
-`EPUB <https://readthedocs.org/projects/knot-resolver/downloads/epub/stable/>`__
-formats for viewing offline.
+.. *Read the Docs* also offers downloads of
+   `PDF <https://readthedocs.org/projects/knot-resolver/downloads/pdf/stable/>`__
+   and
+   `EPUB <https://readthedocs.org/projects/knot-resolver/downloads/epub/stable/>`__
+   formats for viewing offline.
 
 Upgrading
 =========
 Occasionally a major version release might require a manual upgrade.
 Please refer to
-`Upgrading Guide <https://knot-resolver.readthedocs.io/en/stable/upgrading.html>`_.
+`Upgrading Guide <stable/upgrading.html>`_.