workflow fix

Author: HwuanPage

.github/workflows/pr-workflow.yml

@@ -77,7 +77,7 @@ jobs:
         uses: docker/metadata-action@v5
         with:
           images: ${{env.REGISTRY}}/${{env.IMAGE_NAME}}
-          tags:
+          tags: |
             type=sha
             type=raw,value=${{needs.tagging.outputs.tag_name}}
             type=raw,value=latest