ci(docker/backend): mount CI_PROJECT_DIR to tmp dir and copy to WORKDIR instead

.gitlab-ci.yml

@@ -93,7 +93,7 @@ setup:containers:backend: &containers-backend
   image: ${IMAGE_BUILDER}
   script:
     - BACKEND_IMAGE_VERSION=`cat backend-image-version`
-    - buildah bud -t backend/${CI_COMMIT_REF_SLUG}:${BACKEND_IMAGE_VERSION} --build-arg PROJECT_DIR=${CI_PROJECT_DIR} --volume ${CI_PROJECT_DIR}:${CI_PROJECT_DIR} --file docker/backend/Dockerfile
+    - buildah bud -t backend/${CI_COMMIT_REF_SLUG}:${BACKEND_IMAGE_VERSION} --build-arg PROJECT_DIR=${CI_PROJECT_DIR} --volume ${CI_PROJECT_DIR}:/tmp/${CI_PROJECT_DIR} --file docker/backend/Dockerfile
     - buildah push --creds "${CI_REGISTRY_USER}:${CI_JOB_TOKEN}" backend/${CI_COMMIT_REF_SLUG}:${BACKEND_IMAGE_VERSION} ${CI_REGISTRY_IMAGE}/backend/${CI_COMMIT_REF_SLUG}:${BACKEND_IMAGE_VERSION}
   rules:
     - changes:

docker/backend/Dockerfile

@@ -10,9 +10,10 @@ RUN apt-get -y install llvm
 ENV LANG=en_US.UTF-8
 
 ARG PROJECT_DIR=/fradrive
+RUN cp -r /tmp/${PROJECT_DIR} ${PROJECT_DIR}
 WORKDIR ${PROJECT_DIR}
 ENV HOME=${PROJECT_DIR}
-# ENV STACK_ROOT=${PROJECT_DIR}/.stack
+ENV STACK_ROOT=${PROJECT_DIR}/.stack
 
 RUN echo "${PROJECT_DIR}" && pwd && ls -a . && make backend-dependencies