Add E2 SM in the target dockerfiles to use e2 agent in container deployment

- Update builder dockerfiles to build Flexric for E2 SM
- Update target dockerfiles to copy E2 SM

docker/Dockerfile.build.rhel9

@@ -27,6 +27,9 @@
 
 FROM ran-base:latest AS ran-build
 
+ARG E2AP_VERSION=E2AP_V3
+ARG KPM_VERSION=KPM_V3_00
+
 RUN rm -Rf /oai-ran
 WORKDIR /oai-ran
 COPY . .
@@ -35,12 +38,26 @@ COPY . .
 RUN /bin/sh oaienv && \ 
     cd cmake_targets && \
     mkdir -p log && \
-    CXXFLAGS="-Werror -fstack-protector-strong" CFLAGS="-Werror -fstack-protector-strong" ./build_oai -c --ninja \
+    scl enable gcc-toolset-12 "\
+    CXXFLAGS='-Werror -fstack-protector-strong' CFLAGS='-Werror -fstack-protector-strong' ./build_oai -c --ninja \
       --eNB --gNB --RU --UE --nrUE \
-      --build-lib "telnetsrv enbscope uescope nrscope" \
+      --build-e2 --cmake-opt -DXAPP_MULTILANGUAGE=OFF --cmake-opt \
+      -DKPM_VERSION=$KPM_VERSION --cmake-opt -DE2AP_VERSION=$E2AP_VERSION \
+      --build-lib 'telnetsrv enbscope uescope nrscope' \
       -w USRP -t Ethernet \
-      --noavx512 && \
+      --noavx512" && \
     echo "---- ldd on executables ----" && \
     ldd ran_build/build/*softmodem* ran_build/build/nr-cuup ran_build/build/oairu && \
     echo "---- ldd on shared libraries ----" && \
     ldd ran_build/build/*.so
+
+## Build FlexRIC for SM Models
+RUN mkdir -p openair2/E2AP/flexric/build && \
+    cd openair2/E2AP/flexric/build && \
+    scl enable gcc-toolset-12 "\
+    cmake -GNinja -DCMAKE_BUILD_TYPE=Release \
+          -DXAPP_MULTILANGUAGE=OFF \
+          -DKPM_VERSION=$KPM_VERSION \
+          -DE2AP_VERSION=$E2AP_VERSION .. &&\
+    ninja && \
+    ninja install"