diff --git a/Dockerfile b/Dockerfile
index f3e4b22..83469fe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,6 +10,7 @@ WORKDIR /app/
 COPY . /app
 
 # install backend
+RUN find /app -type f -exec sed -i 's/\r$//' {} +
 RUN cd backend && ./setup-sigma-versions.sh
 
 # launch front- and backend