Issue #3654: try to make complex condition work

.github/workflows/docker_image_builder.yml

@@ -126,7 +126,7 @@ jobs:
         # Show some files in the image just to check sanity.
         # otobo_first_time hasn't run yet, so /opt/otobo is still empty
         name: Info
-        if:   steps.changes.outputs.context == 'true' && ${{ matrix.dockerfile == 'otobo.web.dockerfile' }}
+        if:   ${{ steps.changes.outputs.context == 'true' && matrix.dockerfile == 'otobo.web.dockerfile' }}
         run: |
           docker run --rm -w /opt/otobo_install/otobo_next --entrypoint /bin/bash $otobo_ref -c "more git-repo.txt git-branch.txt git-commit.txt RELEASE | cat"