Only run CI for main branch of original repo

.gitlab-ci.yml

@@ -4,7 +4,9 @@ default:
     name: "pandoc/core:latest-alpine"
     entrypoint: [""]
 
-build:
+publish:
+  rules:
+    - if: ("$CI_COMMIT_BRANCH" == "$CI_DEFAULT_BRANCH" && "$CI_PROJECT_PATH" == "fil-l3-stages/portail")
   before_script:
     - apk --no-cache add make git
     - git --version; pandoc --version