update base image

Author: hamdy-simplyblock

docker/Dockerfile_base

@@ -16,6 +16,7 @@ RUN echo \
     tee /etc/apt/sources.list.d/docker.list > /dev/null
 
 RUN apt-get update ; apt-get install docker-ce-cli -y
+RUN apt-get upgrade -y
 
 RUN rm -rf /var/lib/apt/lists/*