diff --git a/.github/workflows/matrixbuild.yml b/.github/workflows/matrixbuild.yml
index ec769bc..de387c1 100644
--- a/.github/workflows/matrixbuild.yml
+++ b/.github/workflows/matrixbuild.yml
@@ -28,6 +28,6 @@ jobs:
     - uses: actions/checkout@v4
     - name: Work around Docker BuildKit regression
       # https://github.com/moby/buildkit/issues/2119: `DOCKER_BUILDKIT=1 docker build` fails if Dockerfile is a symlink
-      run: cp -f --remove-destination $(readlink -f .github/images/${{matrix.dockerenv}}.Dockerfile) .github/images/${{matrix.dockerenv}}.Dockerfile
+      run: [ -L .github/images/${{matrix.dockerenv}}.Dockerfile ] && cp --remove-destination $(readlink -f .github/images/${{matrix.dockerenv}}.Dockerfile) .github/images/${{matrix.dockerenv}}.Dockerfile
     - name: Run build on ${{matrix.dockerenv}}
       run: docker build . --file .github/images/${{matrix.dockerenv}}.Dockerfile --build-arg image=${{matrix.dockerenv}}