ci: add preview-start comment

.github/workflows/preview-start.yml

@@ -0,0 +1,31 @@
+# When `preview-build` start. Leave a message on the PR
+#
+# 🚨🚨🚨 Important 🚨🚨🚨
+# Never do any `checkout` or `npm install` action!
+# `pull_request_target` will enable PR to access the secrets!
+
+name: Preview Start
+
+on:
+  pull_request_target:
+    types: [opened, synchronize, reopened]
+
+permissions:
+  contents: read
+
+jobs:
+  preview-start:
+    permissions:
+      issues: write  # for actions-cool/maintain-one-comment to modify or create issue comments
+      pull-requests: write  # for actions-cool/maintain-one-comment to modify or create PR comments
+    name: start preview info
+    runs-on: ubuntu-latest
+    steps:
+      - name: update status comment
+        uses: actions-cool/maintain-one-comment@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          body: |
+            [![Prepare preview](https://user-images.githubusercontent.com/5378891/72351368-2c979e00-371b-11ea-9652-eb4e825d745e.gif)](https://preview-${{ github.event.workflow_run.id }}-ant-design.surge.sh)
+            <!-- AUTO_PREVIEW_HOOK -->
+          body-include: '<!-- AUTO_PREVIEW_HOOK -->'