NXCALS-1727 initial structure

.gitlab-ci.yml

 image: python:alpine
 
 stages:
+  - build
   - deploy
 
 
@@ -11,7 +12,7 @@ before_script:
   # - pip install mkdocs-material
 
 pages:
-  stage: deploy
+  stage: build
   script:
   - mkdocs build
   - mv site public