Use a template to replace the version tag

(cherry picked from commit 5831221c0e)

docs/_templates/page.html

@@ -0,0 +1,4 @@
+{%- extends "layout.html" %}
+{% block body %}
+  {{ body|replace("VERSION_TAG", version) }}
+{% endblock %}

docs/compose/setup.rst

@@ -19,12 +19,12 @@ Docker Compose configuration is stored in a file named
 :download:`docker-compose.yml`. Additionally, Mailu
 relies on a :download:`.env` file for various settings. Download
 the proper template files from the git repository. To download the configuration
-for the ``{{ github_version }}`` branch, use:
+for the ``VERSION_TAG`` branch, use:
 
 .. code-block:: bash
 
-  wget https://mailu.io/{{ github_version }}/_downloads/docker-compose.yml
+  wget https://mailu.io/VERSION_TAG/_downloads/docker-compose.yml
-  wget https://mailu.io/{{ github_version }}/_downloads/.env
+  wget https://mailu.io/VERSION_TAG/_downloads/.env
 
 Then open the ``.env`` file to setup the mail server. Modify the ``ROOT`` setting
 to match your setup directory if different from ``/mailu``.

docs/conf.py

@@ -2,10 +2,7 @@
 # -*- coding: utf-8 -*-
 #
 
-import os, sys, docutils
+extensions = ['sphinx.ext.imgmath', 'sphinx.ext.viewcode']
-
-sys.path.append(os.path.dirname(__file__))
-extensions = ['sphinx.ext.imgmath', 'sphinx.ext.viewcode', 'conf']
 templates_path = ['_templates']
 source_suffix = '.rst'
 master_doc = 'index'
@@ -40,20 +37,6 @@ html_context = {
 }
 
 
-def setup(app):
-    """ The conf itself is an extension for parsing rst.
-    """
-    def rstjinja(app, docname, source):
-        """ Render our pages as a jinja template for fancy templating.
-        """
-        if app.builder.format != 'html':
-            return
-        source[0] = app.builder.templates.render_string(
-            source[0], app.config.html_context)
-
-    app.connect("source-read", rstjinja)
-
-
 # Upload function when the script is called directly
 if __name__ == "__main__":
     import os, sys, paramiko