chore: mitigates docker rate limiting (#13130)

.github/workflows/pr.yml

@@ -12,6 +12,14 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  login:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
   changes:
     name: Detect changes
     runs-on: buildjet-4vcpu-ubuntu-2204