diff --git a/docker/backend/Dockerfile b/docker/backend/Dockerfile
index a43d1ffec..9b9d874ca 100644
--- a/docker/backend/Dockerfile
+++ b/docker/backend/Dockerfile
@@ -25,42 +25,11 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
 --mount=type=cache,target=/var/lib/apt,sharing=locked \
 apt-get -y update && apt-get -y install texlive-latex-recommended texlive-luatex texlive-plain-generic texlive-lang-german texlive-lang-english
 
-# locally these two should be identical, so that compilation results are written out into the file dir.
-# in CI-pipelines these two should be different, so that the container caches the compilation results.
-ARG MOUNT_DIR=/mnt/fradrive
-ARG PROJECT_DIR=/fradrive
-
+ENV PROJECT_DIR=/fradrive
 RUN mkdir -p "${PROJECT_DIR}"
-# RUN if [ "${PROJECT_DIR}" != "${MOUNT_DIR}" ] ; then cp -r "${MOUNT_DIR}"/* "${PROJECT_DIR}" ; fi
-
-ENV STACK_ROOT="/.stack"
-
 WORKDIR ${PROJECT_DIR}
 ENV HOME=${PROJECT_DIR}
+ENV STACK_ROOT="/.stack"
 
 RUN --mount=type=bind,source=.,target=.,rw stack install yesod-bin
-RUN --mount=type=bind,source=.,target=.,rw stack install hpack
-
-# pre-build dependencies
-RUN --mount=type=bind,source=.,target=.,rw \
-make -- --dependencies-backend STACK_ROOT=${STACK_ROOT} IN_CONTAINER=true JOB=${JOB}
-
-# copy source files
-#COPY app/ ${PROJECT_DIR}/app
-#COPY src/ ${PROJECT_DIR}/src
-#COPY models/ ${PROJECT_DIR}/models
-#COPY messages/ ${PROJECT_DIR}/messages
-#COPY templates/ ${PROJECT_DIR}/templates
-#COPY test/ ${PROJECT_DIR}/test
-#COPY testdata/ ${PROJECT_DIR}/testdata
-
-# copy frontend files
-#COPY assets/ ${PROJECT_DIR}/assets
-#COPY static/ ${PROJECT_DIR}/static
-#COPY well-known/ ${PROJECT_DIR}/well-known
-
-ENV FRADRIVE_MAKE_TARGET=--start-backend
-ENTRYPOINT make -- ${FRADRIVE_MAKE_TARGET} STACK_ROOT="${STACK_ROOT}" IN_CONTAINER=true CONTAINER_FILE="${CONTAINER_FILE}" JOB="${JOB}" SRC="${SRC}"
-
-EXPOSE 3000/tcp
-EXPOSE 3443/tcp
\ No newline at end of file
+RUN --mount=type=bind,source=.,target=.,rw stack install hpack
\ No newline at end of file