diff --git a/tools/manylinux1/Dockerfile.CI35-GCC4.8 b/tools/manylinux1/Dockerfile.CI35-GCC4.8
index b8fd2c7c699a7a31beca73a071959e874e9852da..3efb46d54e15bd9fadfd7116de1777a0762281be 100644
--- a/tools/manylinux1/Dockerfile.CI35-GCC4.8
+++ b/tools/manylinux1/Dockerfile.CI35-GCC4.8
@@ -18,8 +18,7 @@ RUN yum install -y curl-devel
 
 COPY tools/manylinux1/build_scripts ./build_scripts
 
-RUN bash build_scripts/build.sh && \
-  bash build_scripts/install_nccl2.sh && rm -rf build_scripts
+RUN bash build_scripts/build.sh && bash build_scripts/install_nccl2.sh && rm -rf build_scripts
 
 ENV SSL_CERT_FILE=/opt/_internal/certs.pem
 
diff --git a/tools/manylinux1/Dockerfile.CI35-GCC8 b/tools/manylinux1/Dockerfile.CI35-GCC8
index 7fe469c355ec124fd4b6f2a1dbd1845266072a81..2e7264a3f52543945e3f814e9dc650442cf03ed6 100644
--- a/tools/manylinux1/Dockerfile.CI35-GCC8
+++ b/tools/manylinux1/Dockerfile.CI35-GCC8
@@ -16,8 +16,7 @@ ENV PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
 RUN yum install -y sqlite-devel zlib-devel openssl-devel pcre-devel vim tk-devel tkinter libtool xz graphviz gettext-devel expat-devel cpio perl curl-devel
 
 COPY tools/manylinux1/build_scripts /build_scripts
-RUN bash build_scripts/build.sh && \
-  bash build_scripts/install_nccl2.sh && rm -rf build_scripts
+RUN bash build_scripts/build.sh && bash build_scripts/install_nccl2.sh && rm -rf build_scripts
 
 ENV SSL_CERT_FILE=/opt/_internal/certs.pem
 
diff --git a/tools/manylinux1/Dockerfile.x64 b/tools/manylinux1/Dockerfile.x64
index ebddbefaf9db06d785af1daf698a281f9af246bd..a02decb6a5af7838a3c1d3c1d810f0037477f869 100644
--- a/tools/manylinux1/Dockerfile.x64
+++ b/tools/manylinux1/Dockerfile.x64
@@ -15,8 +15,7 @@ ENV PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
 
 RUN yum install -y sqlite-devel zlib-devel openssl-devel pcre-devel vim tk-devel tkinter libtool xz graphviz
 COPY build_scripts /build_scripts
-RUN bash build_scripts/build.sh && \
-  bash build_scripts/install_nccl2.sh && rm -rf build_scripts
+RUN bash build_scripts/build.sh && bash build_scripts/install_nccl2.sh && rm -rf build_scripts
 
 ENV SSL_CERT_FILE=/opt/_internal/certs.pem