Update automate removing domains without ns records

.github/workflows/dns-check.yml

@@ -4,7 +4,6 @@ jobs:
   dns-check:
     name: Remove domains without NS records
     runs-on: ubuntu-latest
-    continue-on-error: true
     steps:
       - uses: actions/checkout@v2
       - run: |
@@ -21,14 +20,18 @@ jobs:
           cd scripts
           python3 dnscheck.py
       - name: Check for changes
+        id: check_changes
         run: |
           if [[ `git status --porcelain pihole-google.txt` ]]; then
             echo "Domains found without NS records"
+            echo "::set-output name=changes_detected::true"
           else
             echo "No domains without NS records found"
-            exit 0
+            echo "::set-output name=changes_detected::false"
           fi
       - name: Commit updated pihole-google.txt
+        if: steps.check_changes.outputs.changes_detected == 'true'
         run: |
-          git add pihole-google.txt && git commit -am "Remove domains without NS records"
+          git add pihole-google.txt
+          git commit -am "Remove domains without NS records"
           git push