chore(ci): some docker improvements

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

docker/Dockerfile.nrUE.ubuntu20

@@ -40,8 +40,16 @@ RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get upgrade --yes && \
     DEBIAN_FRONTEND=noninteractive apt-get install --yes \
         software-properties-common \
-        libsctp1 \
         procps \
+        libsctp1 \
+        libboost-chrono1.71.0 \
+        libboost-date-time1.71.0 \
+        libboost-filesystem1.71.0 \
+        libboost-regex1.71.0 \
+        libboost-serialization1.71.0 \
+        libboost-thread1.71.0 \
+        libboost-system1.71.0 \
+        libboost-program-options1.71.0 \
         tzdata \
         liblapacke \
         libatlas3-base \
@@ -62,6 +70,7 @@ RUN apt-get update && \
     /bin/bash -c 'if [[ "$BUILD_OPTION" = "--sanitize" ]]; then DEBIAN_FRONTEND=noninteractive apt-get install --yes \
         libasan5 \
         libubsan1; fi' && \
+    apt-get clean -y && \
     rm -rf /var/lib/apt/lists/*
 
 WORKDIR /opt/oai-nr-ue/bin
@@ -89,17 +98,6 @@ COPY --from=nr-ue-base /usr/local/bin/uhd_find_devices /usr/local/bin
 COPY --from=nr-ue-base /usr/local/lib/libuhd.so.4.4.0 /usr/local/lib
 COPY --from=nr-ue-base /usr/local/lib/uhd/utils/uhd_images_downloader.py /opt/oai-nr-ue/bin
 
-COPY --from=nr-ue-base \
-    /usr/lib/x86_64-linux-gnu/libboost_chrono.so.1.71.0 \
-    /usr/lib/x86_64-linux-gnu/libboost_date_time.so.1.71.0 \
-    /usr/lib/x86_64-linux-gnu/libboost_filesystem.so.1.71.0 \
-    /usr/lib/x86_64-linux-gnu/libboost_regex.so.1.71.0 \
-    /usr/lib/x86_64-linux-gnu/libboost_serialization.so.1.71.0 \
-    /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.71.0 \
-    /usr/lib/x86_64-linux-gnu/libboost_system.so.1.71.0 \
-    /usr/lib/x86_64-linux-gnu/libboost_program_options.so.1.71.0 \
-    /usr/lib/x86_64-linux-gnu/
-
 RUN /bin/bash -c "ln -s /usr/local/lib/liboai_usrpdevif.so /usr/local/lib/liboai_device.so" && \
     ldconfig && \
     ldd /opt/oai-nr-ue/bin/nr-uesoftmodem