Fix

Signed-off-by: ZePan110 <ze.pan@intel.com>

Author: ZePan110

.github/workflows/nightly-docker-build-publish.yml

@@ -26,15 +26,34 @@ jobs:
         id: get-matrix
         run: |
           examples=($(echo ${EXAMPLES} | tr ',' ' '))
+          echo "EXAMPLES: $EXAMPLES"
+          echo "examples: $examples"
           examples_json=$(printf '%s\n' "${examples[@]}" | sort -u | jq -R '.' | jq -sc '.')
+          echo "$examples_json"
           echo "examples_json=$examples_json" >> $GITHUB_OUTPUT
           echo "EXAMPLES=$EXAMPLES" >> $GITHUB_OUTPUT
           echo "TAG=$TAG" >> $GITHUB_OUTPUT
           echo "PUBLISH_TAGS=$PUBLISH_TAGS" >> $GITHUB_OUTPUT
 
+  check:
+    needs: [get-build-matrix]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check 
+        run: |
+          set -x
+          echo "EXAMPLES: ${{ needs.get-build-matrix.outputs.EXAMPLES }}"
+          echo "examples_json: ${{ needs.get-build-matrix.outputs.examples_json }}"
+          if [ ${{ needs.get-build-matrix.outputs.examples_json != '' && fromJSON(needs.get-build-matrix.outputs.examples_json).length != 0 }} ]; then
+            echo "Examples found."
+          else
+            echo "No examples found."
+          fi
+
   build-and-test:
     needs: get-build-matrix
-    if: ${{ fromJSON(needs.get-build-matrix.outputs.examples_json).length != 0 }}
+    # if: ${{ needs.get-build-matrix.outputs.examples_json != '' && fromJSON(needs.get-build-matrix.outputs.examples_json).length != 0 }}
+    if: ${{ needs.get-build-matrix.outputs.examples_json != '' && fromJSON(needs.get-build-matrix.outputs.examples_json).length > 0 }}
     strategy:
       matrix:
         example: ${{ fromJSON(needs.get-build-matrix.outputs.examples_json) }}