diff --git a/pi/edit_dockerfile.sh b/pi/edit_dockerfile.sh
index 36e0dd6..e089b32 100644
--- a/pi/edit_dockerfile.sh
+++ b/pi/edit_dockerfile.sh
@@ -23,5 +23,6 @@ PI_EXISTING_TAG=$(grep "${DOCKER_REGISTRY}/${PARENT_IMAGE_NAME}:v.*-${PARENT_IMA
 PI_EXISTING_IMAGE="${DOCKER_REGISTRY}/${PARENT_IMAGE_NAME}:${PI_EXISTING_TAG}"
 PI_NEW_IMAGE="${DOCKER_REGISTRY}/${PARENT_IMAGE_NAME}:${RELEASE_TAG}-${PARENT_IMAGE_TYPE}"
 
-echo "$(sed 's|'${PI_EXISTING_IMAGE}'|'${PI_NEW_IMAGE}'|g' ${DOCKERFILE})" > $DOCKERFILE
+DOCKER_CONTENT="$(sed 's|'${PI_EXISTING_IMAGE}'|'${PI_NEW_IMAGE}'|g' ${DOCKERFILE})"
+echo ${DOCKER_CONTENT} > ${DOCKERFILE}
 echo "::notice::Dockerfile updated with new image: ${PI_NEW_IMAGE}"
\ No newline at end of file