Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -2,7 +2,10 @@ image: python:3.6-alpine
 
 pages:
   script:
-  - pip install sphinx
+  - pip install -r requirements.txt
+  - pip install sphinx, pytest
+  - cd docs && make html
+  - mv build/html/ public/
   artifacts:
     paths:
     - public