Corrige le template CI.

prezbuilder-ci.yml

 .prezbuilder:
   retry: 2
+  stage: deploy
   interruptible: true
   tags: [docker]
   variables:
@@ -10,7 +11,7 @@
     name: "${PREZBUILDER_IMAGE}:${PREZBUILDER_TAG}"
     entrypoint: [""]
   script:
-    - prezbuilder "${PREZBUILDER_SRC}" public
+    - prezbuilder build "${PREZBUILDER_SRC}" public
   artifacts:
     name: pages
     paths: