Bump up docker Pypi module version

Also updated docs generation code caused by
deprecated properties in recent version of Sphinx.

Change-Id: Ic5ddf021e62be9748097bd5cc72ffc159f95db12

doc/requirements.txt

@@ -1,7 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-docutils<=0.17
+docutils
 plantuml
 reno
 sphinx-rtd-theme

doc/source/conf.py

@@ -97,12 +97,11 @@ todo_include_todos = False
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-import sphinx_rtd_theme
+# import sphinx_rtd_theme
 html_logo = '_static/airship.logo.white.svg'
 html_theme = "sphinx_rtd_theme"
-html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+# html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 html_theme_options = {
-    'display_version': False,
     'logo_only': True
 }
 

tools/gate/playbooks/docker-image-build.yaml

@@ -52,7 +52,6 @@
       block:
         - pip:
             name: docker
-            version: 4.4.4
             executable: pip3
       become: True
 
@@ -60,7 +59,6 @@
       block:
         - pip:
             name: tox
-            version: 3.28.0
             executable: pip3
       become: True
 
@@ -69,7 +67,7 @@
       when: not publish
       shell: |
         set -ex
-        sudo -E -H pip3 install tox==3.28.0
+        sudo -E -H pip3 install tox
         make run_images
       args:
         chdir: "{{ zuul.project.src_dir }}"