diff --git a/Dockerfile b/Dockerfile
index 8dc5f1f8..210719bf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@ RUN yum install -y make git gcc libcurl-devel sqlite-devel && \
     && gosu nobody true
 RUN mkdir -p /onedrive/conf /onedrive/data
 COPY . /usr/src/onedrive
-RUN . `bash install.sh -a` && \
+RUN . "$(bash install.sh -a)" && \
     make -C /usr/src/onedrive install.noservice && \
     make -C /usr/src/onedrive clean
 COPY entrypoint.sh /entrypoint.sh