fix param

Signed-off-by: chensuyue <suyue.chen@intel.com>

Author: chensuyue

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

@@ -16,7 +16,7 @@ jobs:
   get-build-matrix:
     runs-on: ubuntu-latest
     outputs:
-      examples: ${{ steps.get-matrix.outputs.examples }}
+      examples_json: ${{ steps.get-matrix.outputs.examples_json }}
       EXAMPLES: ${{ steps.get-matrix.outputs.EXAMPLES }}
       TAG: ${{ steps.get-matrix.outputs.TAG }}
       PUBLISH_TAGS: ${{ steps.get-matrix.outputs.PUBLISH_TAGS }}
@@ -26,7 +26,7 @@ jobs:
         run: |
           examples=($(echo ${EXAMPLES} | tr ',' ' '))
           examples_json=$(printf '%s\n' "${examples[@]}" | sort -u | jq -R '.' | jq -sc '.')
-          echo "examples=$examples_json" >> $GITHUB_OUTPUT
+          echo "examples_json=$examples_json" >> $GITHUB_OUTPUT
           echo "EXAMPLES=$EXAMPLES" >> $GITHUB_OUTPUT
           echo "TAG=$TAG" >> $GITHUB_OUTPUT
           echo "PUBLISH_TAGS=$PUBLISH_TAGS" >> $GITHUB_OUTPUT
@@ -35,7 +35,7 @@ jobs:
     needs: get-build-matrix
     strategy:
       matrix:
-        example: ${{ fromJSON(needs.get-build-matrix.outputs.examples) }}
+        example: ${{ fromJSON(needs.get-build-matrix.outputs.examples_json) }}
       fail-fast: false
     uses: ./.github/workflows/_example-workflow.yml
     with: