Test Git version in container

Author: hongquan

.github/workflows/install.yml

@@ -80,6 +80,7 @@ jobs:
         shell: bash
         run: |
           set -x
+          git --version
           python3 -m build
           python3 -m pip install .
           # Avoid importing the systemd module from the git repository

docs/conf.py

@@ -12,8 +12,6 @@
 # serve to show the default.
 
 import sys, os
-print(sys.path)
-import systemd
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the