ci: Replace docker/login-action with retry-wrapped docker login for DockerHub (#28442)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/actions/docker-registry-login/action.yml

@@ -39,10 +39,13 @@ runs:
 
     - name: Login to DockerHub
       if: inputs.login-dockerhub == 'true'
-      uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4.0.0
-      with:
-        username: ${{ inputs.dockerhub-username }}
-        password: ${{ inputs.dockerhub-password }}
+      shell: bash
+      env:
+        DOCKER_USER: ${{ inputs.dockerhub-username }}
+        DOCKER_PASS: ${{ inputs.dockerhub-password }}
+      run: |
+        node .github/scripts/retry.mjs --attempts 3 --delay 10 \
+          'echo "$DOCKER_PASS" | docker login -u "$DOCKER_USER" --password-stdin'
 
     - name: Login to DHI Registry
       if: inputs.login-dhi == 'true'