diff --git a/preprocessor/Dockerfile b/preprocessor/Dockerfile
index 79157973c132cb9ae48c4c8cf2f2c314ef264abc..a081f9a91bae56b53125e698c26177498ab95a15 100644
--- a/preprocessor/Dockerfile
+++ b/preprocessor/Dockerfile
@@ -73,6 +73,8 @@ ADD run-preprocessor.sh \
     setup.py \
     /
 
+RUN chmod +x /run-preprocessor.sh
+
 COPY preprocessor /preprocessor
 
 RUN cd / && \