Refactoring each os image

More reasonable use of COPY, easy to maintain

images/02-logrotate/usr/bin/entrypoint.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+cp /usr/share/logrotate/logrotate.d/* /etc/logrotate.d
+
+exec /usr/bin/ros entrypoint "$@"

images/02-logrotate/usr/share/logrotate/logrotate.d/docker

@@ -0,0 +1,8 @@
+/var/log/docker.log
+/var/log/system-docker.log
+{
+	rotate 7
+	daily
+	missingok
+	copytruncate
+}