defining two separate stages

.gitlab-ci.yml

 image: registry.esss.lu.se/ics-docker/miniconda
 
+stages:
+    - test
+    - deploy
 check:
-  stage: test 
+  stage: test
   image: registry.esss.lu.se/ics-docker/pre-commit
   script:
     - pre-commit run --all-files
 
 pages:
+  stage: deploy
   script:
   - pip install sphinx sphinxcontrib-blockdiag blockdiag sphinxcontrib-restbuilder numpy
   - python setup.py install