chore(ci): some docker improvements

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

docker/Dockerfile.eNB.ubuntu20

@@ -40,9 +40,17 @@ RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get upgrade --yes && \
     DEBIAN_FRONTEND=noninteractive apt-get install --yes \
         software-properties-common \
-        tzdata \
         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 \
         libblas3 \
         libatlas3-base \
         libconfig9 \
@@ -63,6 +71,7 @@ RUN apt-get update && \
         libasan5 \
         libubsan1 \
         liblapacke; fi' && \
+    apt-get clean -y && \
     rm -rf /var/lib/apt/lists/*
 
 WORKDIR /opt/oai-enb/bin
@@ -86,16 +95,6 @@ COPY --from=enb-build \
 COPY --from=enb-base /usr/local/bin/uhd_find_devices /usr/local/bin
 COPY --from=enb-base /usr/local/lib/libuhd.so.4.4.0 /usr/local/lib
 COPY --from=enb-base /usr/local/lib/uhd/utils/uhd_images_downloader.py /opt/oai-enb/bin
-COPY --from=enb-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" && \
     /bin/bash -c "ln -s /usr/local/lib/liboai_eth_transpro.so /usr/local/lib/liboai_transpro.so" && \