trying to improve online docs rendering

.gitlab-ci.yml

@@ -5,8 +5,8 @@ test:
   script:
   - apt-get update
   - DEBIAN_FRONTEND=noninteractive apt-get install -y build-essential gcc cmake python3-pip python3 python3-dev
-  - pip install -U -r requirements.txt
-  - python setup.py install
+  - pip3 install -U -r requirements.txt
+  - python3 setup.py install
   - sphinx-build -b html docs/source public
   only:
   - branches
@@ -18,8 +18,8 @@ pages:
   script:
   - apt-get update
   - DEBIAN_FRONTEND=noninteractive apt-get install -y build-essential gcc cmake python3-pip python3 python3-dev
-  - pip install -U -r requirements.txt
-  - python setup.py install
+  - pip3 install -U -r requirements.txt
+  - python3 setup.py install
   - sphinx-build -b html docs/source public
   artifacts:
     paths: