diff --git a/.github/workflows/test-docker-build.yml b/.github/workflows/test-docker-build.yml
index b13465caa5..88bf8a35d4 100644
--- a/.github/workflows/test-docker-build.yml
+++ b/.github/workflows/test-docker-build.yml
@@ -29,9 +29,9 @@ jobs:
         if: steps.changed-files.outputs.any_changed == 'true'
         id: set-matrix
         env:
-          ALL_CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
+          CHANGED_FILES: "${{ steps.changed-files.outputs.all_changed_files }}"
         run: |
-          echo "matrix=${ALL_CHANGED_FILES}" >> $GITHUB_OUTPUT
+          echo "matrix=$(echo ${CHANGED_FILES} | sed -e 's/\\\"/\"/g')" >> $GITHUB_OUTPUT
   build_modified_files:
     needs: get_changed_files
     name: Build Docker images on modified files
diff --git a/docker/peft-gpu/Dockerfile b/docker/peft-gpu/Dockerfile
index 994c647523..a674749a19 100644
--- a/docker/peft-gpu/Dockerfile
+++ b/docker/peft-gpu/Dockerfile
@@ -14,6 +14,8 @@ RUN apt-get update && \
 
 RUN git lfs install
 
+RUN echo modified
+
 # Create our conda env - copied from https://github.com/huggingface/accelerate/blob/main/docker/accelerate-gpu/Dockerfile
 RUN conda create --name peft python=${PYTHON_VERSION} ipython jupyter pip