Check if latest nightly succeeded.

.github/workflows/pr.yaml

@@ -13,6 +13,7 @@ jobs:
   # Please keep pr-builder as the top job here
   pr-builder:
     needs:
+      - check-nightly-ci
       - changed-files
       - checks
       - conda-cpp-build
@@ -54,6 +55,24 @@ jobs:
       - name: Telemetry setup
         if: ${{ vars.TELEMETRY_ENABLED == 'true' }}
         uses: rapidsai/shared-actions/telemetry-dispatch-stash-base-env-vars@main
+  check-nightly-ci:
+    runs-on: ubuntu-latest
+    container:
+      # Just need an image where Python is available
+      image: rapidsai/ci-wheel:latest
+      env:
+        RAPIDS_GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Check if nightly CI is passing
+        uses: rapidsai/shared-actions/check_nightly_success/dispatch@feat/check_nightly_ci
+        with:
+          # TODO: Change back before merging, just using cugraph to demonstrate a failure
+          repo: cugraph
+          #repo: cudf
+        # TODO: Remove envs once the shared-actions PR is merged.
+        env:
+          SHARED_ACTIONS_REPO: rapidsai/shared-actions
+          SHARED_ACTIONS_REF: feat/check_nightly_ci
   changed-files:
     secrets: inherit
     needs: telemetry-setup