Refactor danger using environment to detect `jh` directory

Co-Authored-By: @godfat-gitlab

.gitlab/ci/review.gitlab-ci.yml

@@ -85,12 +85,13 @@ danger-review:
     - bundle_install_script "--with danger"
     - run_timed_command "retry yarn install --frozen-lockfile"
   script:
+    # ${DANGER_DANGERFILE} is used by Jihulab for customizing danger support: https://jihulab.com/gitlab-cn/gitlab/-/blob/main-jh/jh/.gitlab-ci.yml
     - >
       if [ -z "$DANGER_GITLAB_API_TOKEN" ]; then
         run_timed_command danger_as_local
       else
         danger_id=$(echo -n ${DANGER_GITLAB_API_TOKEN} | md5sum | awk '{print $1}' | cut -c5-10)
-        run_timed_command "bundle exec danger --fail-on-errors=true --verbose --danger_id=${danger_id}"
+        run_timed_command "bundle exec danger --fail-on-errors=true --verbose --danger_id=\"${danger_id}\" --dangerfile=\"${DANGER_DANGERFILE:-Dangerfile}\""
       fi
 
 danger-review-local:

scripts/utils.sh

@@ -181,5 +181,5 @@ function danger_as_local() {
   # Force danger to skip CI source GitLab and fallback to "local only git repo".
   unset GITLAB_CI
   # We need to base SHA to help danger determine the base commit for this shallow clone.
-  bundle exec danger dry_run --fail-on-errors=true --verbose --base="${CI_MERGE_REQUEST_DIFF_BASE_SHA}" --head="${CI_MERGE_REQUEST_SOURCE_BRANCH_SHA:-$CI_COMMIT_SHA}"
+  bundle exec danger dry_run --fail-on-errors=true --verbose --base="${CI_MERGE_REQUEST_DIFF_BASE_SHA}" --head="${CI_MERGE_REQUEST_SOURCE_BRANCH_SHA:-$CI_COMMIT_SHA}" --dangerfile="${DANGER_DANGERFILE:-Dangerfile}"
 }