fix github actions bug

ci/docker/centos-7-core.dockerfile

@@ -8,11 +8,12 @@ SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 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 \
+    devtoolset-6-gcc devtoolset-6-gcc-c++ devtoolset-6-gcc-gfortran llvm-toolset-7.0-clang llvm-toolset-7.0-clang-tools-extra mysql 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
+RUN source scl_source enable devtoolset-6 && source scl_source enable llvm-toolset-7.0
 
 ENV CLANG_TOOLS_PATH="/opt/rh/llvm-toolset-7.0/root/usr/bin"

docker/build_env/cpu/centos7/Dockerfile

@@ -3,7 +3,7 @@ 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 \
+    devtoolset-6-gcc devtoolset-6-gcc-c++ devtoolset-6-gcc-gfortran llvm-toolset-7.0-clang llvm-toolset-7.0-clang-tools-extra mysql lcov \
     && \
     rm -rf /var/cache/yum/*
 

docker/build_env/gpu/centos7/Dockerfile

@@ -5,7 +5,7 @@ ENV NVIDIA_DRIVER_CAPABILITIES compute,utility
 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-7-gcc devtoolset-7-gcc-c++ devtoolset-7-gcc-gfortran llvm-toolset-7.0-clang llvm-toolset-7.0-clang-tools-extra lcov \
+    devtoolset-7-gcc devtoolset-7-gcc-c++ devtoolset-7-gcc-gfortran llvm-toolset-7.0-clang llvm-toolset-7.0-clang-tools-extra mysql lcov \
     && \
     rm -rf /var/cache/yum/*