Fix sonarqube issue docker:S6470

Dockerfile

 FROM alpine
 RUN apk add bash make gcc g++ cmake gtest-dev
 
-COPY . /tmp/
+COPY ./src/ /tmp/src/
+COPY ./tests/ /tmp/tests/
+COPY ./CMakeLists.txt /tmp/CMakeLists.txt
 RUN cd /tmp && \
     cmake -B build && \
     cmake --build build && \