ci: switch to GitLab pages

Signed-off-by: Marc 'risson' Schmitt <risson@cri.epita.fr>

.gitlab-ci.yml

+---
+
 stages:
-  - site-builder
+  - build
+  - deploy
   - site-publisher
 
-.template: &template
-  stage: site-publisher
-  image:
-    name: banst/awscli:1.18.76
-    entrypoint: [""]
-  dependencies:
-    - site-builder
-  script:
-    - aws s3 --endpoint-url https://s3.cri.epita.fr/ sync $(pwd)/site $CRI_BUCKET --acl public-read --delete
-
-site-builder:
-  stage: site-builder
+build:
+  stage: build
   image:
     name: squidfunk/mkdocs-material:5.5.14
     entrypoint: [""]
@@ -24,20 +17,14 @@ site-builder:
     paths:
       - site
 
-site-publisher:release:
-  <<: *template
+pages:
+  stage: deploy
+  dependencies:
+    - build
+  script:
+    - cp -R site public
+  artifacts:
+    paths:
+      - public
   only:
     - master
-  variables:
-    AWS_SECRET_ACCESS_KEY: $cri_doc_secret
-    AWS_ACCESS_KEY_ID: $cri_doc_access
-    CRI_BUCKET: $cri_doc_bucket
-
-site-publisher:dev:
-  <<: *template
-  except:
-    - master
-  variables:
-    AWS_SECRET_ACCESS_KEY: $cri_doc_dev_secret
-    AWS_ACCESS_KEY_ID: $cri_doc_dev_access
-    CRI_BUCKET: $cri_doc_dev_bucket