Add copy button to bash snippets in docs

docs/conf.py

@@ -46,6 +46,7 @@ extensions = [
     'recommonmark',
     'sphinxcontrib_django2',
     'sphinx.ext.viewcode',
+    'sphinx_copybutton'
 ]
 
 # Add any paths that contain templates here, relative to this directory.

docs/requirements.txt

@@ -5,6 +5,7 @@ recommonmark==0.7.1
 Jinja2<3.1
 docutils==0.16
 sphinxcontrib-django2
+sphinx-copybutton
 
 # Autodoc dependencies
 celery>=5.2.0,<6.0.0