gcc instead of broken clang on s390x

Containerfile

@@ -1,19 +1,16 @@
 FROM quay.io/centos/centos:stream9 AS builder
 ENV SEARCHD_REF=6.2.12 \
     SEARCHD_REPO=https://github.com/manticoresoftware/manticoresearch.git \
-    CC=clang-16 \
-    CXX=clang++-16 \
     BUILD_PATH=/tmp/manticore_uselessly_long_path_to_prevent_rpm_build_issues \
     BUILD_FLAGS="-DUSE_SYSLOG=0 -DWITH_GALERA=0 -DWITH_RE2=0 -DWITH_STEMMER=0 -DWITH_ICU=1 -DWITH_SSL=1 -DWITH_ZLIB=1 -DWITH_ODBC=0 -DWITH_EXPAT=0 -DWITH_ICONV=1 -DWITH_POSTGRESQL=0 -DWITH_MYSQL=0 -DBUILD_TESTING=0"
 WORKDIR $BUILD_PATH
 
 SHELL ["/bin/bash", "-x", "-o", "pipefail", "-c"]
 # hadolint ignore=DL3003,DL3032,SC2046
-RUN yum install -y --setopt=skip_missing_names_on_install=False,tsflags=nodocs llvm-toolset mysql cmake boost-devel openssl-devel zlib-devel bison flex systemd-units rpm-build git && \
+RUN yum install -y --setopt=skip_missing_names_on_install=False,tsflags=nodocs make automake gcc gcc-c++ kernel-devel mysql cmake boost-devel openssl-devel zlib-devel bison flex systemd-units rpm-build git && \
       git clone --depth=1 --branch=$SEARCHD_REF $SEARCHD_REPO . && \
       sed -i -e 's/Boost_USE_STATIC_LIBS ON/Boost_USE_STATIC_LIBS OFF/' src/CMakeLists.txt && \
       mkdir build && cd build && \
-      clang-16 --version && clang++-16 --version && \
       cmake $BUILD_FLAGS .. && \
       cmake --build . --target package --config RelWithDebInfo