Add systemctl alias

sources/assets/shells/aliases.d/_init

@@ -8,3 +8,4 @@ alias urldecode='python -c "import sys, urllib as ul; print ul.unquote_plus(sys.
 alias sed-empty-line='sed /^$/d'
 alias http-put-server='python3 /opt/resources/linux/http-put-server.py --bind 0.0.0.0'
 alias ws='cd /workspace'
+alias systemctl="echo 'Systemctl cannot be used inside the container. Please use the \"service\" command instead.' && false"