add centos7 build cpu version enviroment

core/unittest/server/test_config.cpp

@@ -17,6 +17,7 @@
 
 #include <gtest/gtest-death-test.h>
 #include <gtest/gtest.h>
+#include <cmath>
 
 #include "config/YamlConfigMgr.h"
 #include "server/Config.h"
@@ -67,9 +68,9 @@ TEST_F(ConfigTest, CONFIG_TEST) {
 
     server_config.SetValue("float_test", "2.5");
     double dbl = server_config.GetDoubleValue("float_test");
-    ASSERT_LE(abs(dbl - 2.5), std::numeric_limits<double>::epsilon());
+    ASSERT_LE(std:fabs(dbl - 2.5), std::numeric_limits<double>::epsilon());
     float flt = server_config.GetFloatValue("float_test");
-    ASSERT_LE(abs(flt - 2.5), std::numeric_limits<float>::epsilon());
+    ASSERT_LE(std:fabs(flt - 2.5), std::numeric_limits<float>::epsilon());
 
     server_config.SetValue("bool_test", "true");
     bool blt = server_config.GetBoolValue("bool_test");

docker/build_env/cpu/centos7/Dockerfile

+FROM centos:centos7
+
+RUN yum install -y epel-release centos-release-scl-rh && yum install -y wget curl which && \
+    wget -qO- "https://cmake.org/files/v3.14/cmake-3.14.3-Linux-x86_64.tar.gz" | tar --strip-components=1 -xz -C /usr/local && \
+    yum install -y ccache make automake git python3-pip libcurl-devel python3-devel boost-static mysql-devel \
+    devtoolset-6-gcc devtoolset-6-gcc-c++ devtoolset-6-gcc-gfortran llvm-toolset-7.0-clang llvm-toolset-7.0-clang-tools-extra lcov \
+    && \
+    rm -rf /var/cache/yum/*
+
+RUN echo "source scl_source enable devtoolset-6" >> /etc/profile.d/devtoolset-6.sh
+RUN echo "source scl_source enable llvm-toolset-7.0" >> /etc/profile.d/llvm-toolset-7.sh
+
+ENV CLANG_TOOLS_PATH="/opt/rh/llvm-toolset-7.0/root/usr/bin"
+
+COPY docker-entrypoint.sh /app/docker-entrypoint.sh
+
+WORKDIR /root
+
+ENTRYPOINT [ "/app/docker-entrypoint.sh" ]
+CMD [ "start" ]
\ No newline at end of file

docker/build_env/cpu/centos7/docker-entrypoint.sh

+#!/bin/bash
+
+set -e
+
+if [ "$1" = 'start' ]; then
+   tail -f /dev/null
+fi
+
+exec "$@"
+