diff --git a/docker/build/Dockerfile b/docker/build/Dockerfile
index 584fe9434..d0dfd3ef7 100644
--- a/docker/build/Dockerfile
+++ b/docker/build/Dockerfile
@@ -11,9 +11,9 @@ COPY setup.sh /root
 ARG USER=open5gs
 ARG REPO=open5gs
 ARG BRANCH=main
-RUN	git clone https://github.com/$USER/$REPO
+RUN git clone https://github.com/$USER/$REPO
 ADD https://api.github.com/repos/$USER/$REPO/git/refs/heads/$BRANCH /root/open5gs-ver.json
 
-RUN	cd $REPO && \
-	git fetch && git checkout -f -B $BRANCH origin/$BRANCH && \
+RUN cd $REPO && \
+    git fetch && git checkout -f -B $BRANCH origin/$BRANCH && \
     meson build && ninja -C build install