diff --git a/tools/dockerfile/build_scripts/build_utils.sh b/tools/dockerfile/build_scripts/build_utils.sh
index c8e0b6c3f2775b29cd3a32802a7172deca7dc3e0..d3098686594c0d35225dc014c16720cc99aa4b85 100755
--- a/tools/dockerfile/build_scripts/build_utils.sh
+++ b/tools/dockerfile/build_scripts/build_utils.sh
@@ -130,6 +130,12 @@ function build_cpython {
 
 function build_cpythons {
     for py_ver in $@; do
+        if [ ${py_ver} == "2.7.15" ]; then
+            GET_PIP_URL="https://bootstrap.pypa.io/2.7/get-pip.py"
+        elif [ ${py_ver} == "3.5.1" ]  ;then
+            GET_PIP_URL="https://bootstrap.pypa.io/3.5/get-pip.py"
+        fi
+
         check_var $GET_PIP_URL
         curl -sLO $GET_PIP_URL
         build_cpython $py_ver
diff --git a/tools/dockerfile/ci_dockerfile.sh b/tools/dockerfile/ci_dockerfile.sh
index 2fa3d5141e5854aa832ce9a04d5cd3bbcfe8f4b5..04594b2917af89e57fdea3d155e33e10186ab96d 100644
--- a/tools/dockerfile/ci_dockerfile.sh
+++ b/tools/dockerfile/ci_dockerfile.sh
@@ -41,6 +41,7 @@ function make_centos_dockerfile(){
   sed "s/<baseimg>/11.0-cudnn8-devel-centos7/g" Dockerfile.centos >${dockerfile_name}
   sed -i "s#COPY build_scripts /build_scripts#COPY tools/dockerfile/build_scripts  ./build_scripts#g" ${dockerfile_name} 
   dockerfile_line=$(wc -l ${dockerfile_name}|awk '{print $1}')
+  sed -i "${dockerfile_line}i RUN rm -f /usr/bin/cc && ln -s /usr/local/gcc-8.2/bin/gcc /usr/bin/cc" ${dockerfile_name}
   sed -i "${dockerfile_line}i RUN ln -s /usr/lib64/libz.so /usr/local/lib/libz.so \\
     RUN ln -s /usr/local/lib/libnccl.so /usr/local/cuda/lib64/ \\
     RUN rm -rf /usr/include/NvInfer*" ${dockerfile_name}