chore: add step to update Docker Hub description with README content

Author: danbao

.github/workflows/build.yml

@@ -172,3 +172,11 @@ jobs:
             git commit -m "docs: update README with Docker image info"
             git push
           fi
+
+      - name: Update Docker Hub Description
+        uses: peter-evans/dockerhub-description@v4
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_PASSWORD }}
+          repository: ringcentral/node
+          readme-filepath: ./README.md