Merge branch 'master' of framagit-jebins:jebins/sen2chain

.gitlab-ci.yml

-image: alpine
+image: python:3.6
 
+cache:
+  paths:
+    - .pip
+
+before_script:
+  - mkdir -p .pip
+  - pip install -U pip
+  - pip --cache-dir=.pip install sphinx
+  - pip --cache-dir=.pip install sphinx-autodoc-typehints
+  - pip --cache-dir=.pip install sphinx_rtd_theme
+  - pip --cache-dir=.pip install -r requirements.txt
+  
 pages:
   script:
-  - apk add --no-cache python3
-  - apk add --pkg-config
-  - python3 -m ensurepip
-  - pip3 install -r requirements.txt
-  - pip3 install sphinx
-  - apk --no-cache add make
-  - cd docs && make html
-  - mv build/html/ public/
+  - sphinx-build docs/source docs/build/html
+  - mv docs/build/html public
   artifacts:
     paths:
     - public
   only:
-  - master
+  - master
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