ci: preview deploy output

.github/workflows/main.yml

@@ -82,7 +82,15 @@ jobs:
           NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE_ID }}
         run: |
           netlify deploy --dir=dist --json > output.log
-          echo "::set-output name=stdout::$(cat output.log)"
+          export NETLIFY_STDOUT=$(cat output.log)
       - name: Report
-        run: |
-          echo ${{ steps.preview-deploy.outputs.stdout }}
+        uses: actions/github-script@v2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}i
+          script: |
+            github.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: ${{ $NETLIFY_STDOUT }}
+            })