docs: call sphinx-build to build doc, the command "setup.py build_sphinx" no longer exists

Author: rmmancom

.circleci/config.yml

@@ -154,7 +154,7 @@ commands:
           set -e
           . ci/bin/activate
           pip install -e ".[docs]"
-          python setup.py build_sphinx
+          sphinx-build -b html docs/ build/sphinx/html
           cp -r ./build "$CIRCLE_ARTIFACTS"
     - run:
         name: Build distribution

docker/Dockerfile

@@ -34,7 +34,7 @@ RUN set -eux \
   ; pip install nbformat jupyter-core jupyter-client Pandoc --upgrade \
   ; pip install -r ./notebooker/notebook_templates_example/notebook_requirements.txt \
   ; python setup.py develop \
-  ; python setup.py build_sphinx \
+  ; sphinx-build -b html docs/ build/sphinx/html \
   ; py.test tests \
   ; python setup.py bdist_wheel --universal
 

setup.cfg

@@ -55,7 +55,7 @@ install_requires =
 
 [options.extras_require]
 prometheus = prometheus_client
-docs = docutils; sphinx; numpydoc; sphinxcontrib-httpdomain; sphinxcontrib-httpdomain; sphinx-click
+docs = docutils; sphinx; setuptools; numpydoc; sphinxcontrib-httpdomain; sphinxcontrib-httpdomain; sphinx-click
 test = openpyxl; pytest; mock; pytest-cov; pytest-timeout; pytest-xdist; pytest-server-fixtures; freezegun; hypothesis>=3.83.2
 
 [flake8]