diff --git a/docker/backend/Dockerfile b/docker/backend/Dockerfile
index 447bd2891..5e79a48ca 100644
--- a/docker/backend/Dockerfile
+++ b/docker/backend/Dockerfile
@@ -23,14 +23,14 @@ ARG MOUNT_DIR=/mnt/fradrive
 ARG PROJECT_DIR=/fradrive
 
 RUN mkdir -p "${PROJECT_DIR}"
-RUN if [ "${PROJECT_DIR}" != "${MOUNT_DIR}" ] ; then cp -r "${MOUNT_DIR}"/* "${PROJECT_DIR}" ; fi
+# RUN if [ "${PROJECT_DIR}" != "${MOUNT_DIR}" ] ; then cp -r "${MOUNT_DIR}"/* "${PROJECT_DIR}" ; fi
 
 RUN mkdir -p "${PROJECT_DIR}/.stack"
 ENV STACK_ROOT="${PROJECT_DIR}/.stack"
 
 WORKDIR ${PROJECT_DIR}
 ENV HOME=${PROJECT_DIR}
-RUN make -- --dependencies-backend STACK_ROOT=${STACK_ROOT} IN_CONTAINER=true JOB=${JOB}
+RUN --mount=type=cache,target=/${MOUNT_DIR} make -- --dependencies-backend STACK_ROOT=${STACK_ROOT} IN_CONTAINER=true JOB=${JOB}
 
 RUN stack install yesod-bin
 RUN stack install hpack