Add check for new commits for nightly build

.github/workflows/publish-nightly.yaml

@@ -5,9 +5,23 @@ on:
    - cron: "0 0 * * *"
 
 jobs:
+  check:
+    runs-on: ubuntu-latest
+      name: Check latest commit
+      outputs:
+        should_run: ${{ steps.should_run.outputs.should_run }}
+      steps:
+        - uses: actions/checkout@v2
+    - id: should_run
+      continue-on-error: true
+      name: Check new commits
+      if: ${{ github.event_name == 'schedule' }}
+      run: test -z $(git rev-list  --after="24 hours"  ${{ github.sha }}) && echo "::set-output name=should_run::false"
+
   publish:
+    needs: check
+    if: ${{ needs.check.outputs.should_run != 'false' }}
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v1
     - name: Setup .NET Core