Update .gitlab-ci.yml file

.gitlab-ci.yml

 # The Docker image that will be used to build your app
 image: harbor.pagoda.os.univ-lyon1.fr/ecoquery-hugo/hugo:latest
+
+pages:
+  stage: deploy
+  script:
+      - pwd
+      - cd web
+      - hugo
+      - mv public ../public
+      - ls ..
+      - ls ../public
+  artifacts:
+    paths:
+      - public
+  only:
+    - master