diff --git a/.github/workflows/build_docker_image.yml b/.github/workflows/build_docker_image.yml
index 1b394393..a71e5b0d 100644
--- a/.github/workflows/build_docker_image.yml
+++ b/.github/workflows/build_docker_image.yml
@@ -23,6 +23,8 @@ jobs:
   build-docker-image:
     needs: authorize
     runs-on: public
+    outputs:
+      matrix: ${{ steps.build-and-push.outputs.matrix }}
     steps:
       - uses: actions/checkout@v3
       # try to create a tag