actually specify the right path for the .env

I am so tired and just want to go to sleep :(

.gitlab-ci.yml

@@ -98,10 +98,10 @@ deploy application:
       src/frontend
       src/install-dev.sh
       src/backend/node_modules
-      .env
+      src/backend/.env
     - docker-compose -f docker-compose.prod.yml build
     - sed -i "s/\(^DB_PASSWORD=\).*/\1$(cat $POSTGRES_PASSWORD)/" $PROJ_DIR/.env
-    - cp $PROJ_DIR/.env .env
+    - cp $PROJ_DIR/.env src/backend/.env
     - docker build -t $DOORCODE_IMAGE_NAME -f prod.Dockerfile .
     - docker build --build-arg APP_IMAGE=$DOORCODE_IMAGE_NAME -t $NGINX_IMAGE_NAME -f nginx.Dockerfile .
     - docker stack deploy -c docker-compose.prod.yml doorcode --prune

nginx.Dockerfile

@@ -8,3 +8,4 @@ COPY --from=source /var/www ${WORKDIR}
 COPY simplesamlphp-1.19.0-rc1/ ../simplesamlphp
 COPY nginx/conf.d/prod.conf /etc/nginx/conf.d/prod.conf
 COPY nginx/dhparam/ /run/dhparam
+RUN rm -rf backend/.env