Added Clixon example full system docker container, see [docker/system].

docker/system/stat.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+# Show stats (IP address etc) about the clixon containers
+# include err(), stat() and other functions
+. ./lib.sh
+
+stat clixon/clixon-system
+
+name=clixon/clixon-system
+ps=$(sudo docker ps -f ancestor=$name|tail -n +2|grep $name|awk '{print $1}')
+echo "sudo docker exec -it $ps clixon_cli # example command"