+WORKDIR /opt/submgr
+
+###########################################################
+#
+###########################################################
+FROM submgrcore as submgre2apbuild
+
+
+ENV CFLAGS="-DASN_DISABLE_OER_SUPPORT"
+ENV CGO_CFLAGS="-DASN_DISABLE_OER_SUPPORT"
+
+COPY 3rdparty 3rdparty
+RUN cd 3rdparty/E2AP-v01.00.00 && \
+ gcc -c ${CFLAGS} -I. -g -fPIC *.c && \
+ gcc *.o -g -shared -o libe2ap.so && \
+ cp libe2ap.so /usr/local/lib/ && \
+ cp *.h /usr/local/include/ && \
+ ldconfig
+
+
+RUN echo "E2AP E2AP-v01.00.00" >> /manifests/versions.txt
+
+
+COPY e2ap e2ap
+RUN cd e2ap/libe2ap_wrapper && \
+ gcc -c ${CFLAGS} -g -fPIC *.c && \
+ gcc *.o -g -shared -o libe2ap_wrapper.so && \
+ cp libe2ap_wrapper.so /usr/local/lib/ && \
+ cp *.h /usr/local/include/ && \
+ ldconfig
+
+# unittest
+RUN cd e2ap && go test -v ./pkg/conv
+RUN cd e2ap && go test -v ./pkg/e2ap_wrapper
+
+# test formating (not important)
+RUN cd e2ap && test -z "$(gofmt -l pkg/conv/*.go)"
+RUN cd e2ap && test -z "$(gofmt -l pkg/e2ap_wrapper/*.go)"
+RUN cd e2ap && test -z "$(gofmt -l pkg/e2ap/*.go)"
+RUN cd e2ap && test -z "$(gofmt -l pkg/e2ap/e2ap_tests/*.go)"
+
+
+###########################################################
+#
+###########################################################
+FROM submgre2apbuild as submgrbuild
+#
+#
+#
+COPY go.mod go.mod
+RUN go mod download
+
+#
+#
+#
+RUN mkdir pkg
+COPY api api
+
+
+ARG RTMGRVERSION=cd7867c8f527f46fd8702b0b8d6b380a8e134bea
+
+RUN git clone "https://gerrit.o-ran-sc.org/r/ric-plt/rtmgr" \
+ && git -C "rtmgr" checkout $RTMGRVERSION \