* fix image name generation
* add logging directory and direct output to files there
removed linked mount in try script as btrfs does not create volume directories (bind mount only now)
move packages and init into separate directories to keep cache separate
fix some minor bugs
to be more flexible passing commands or executing a script when staring container
by default will start a shell
can map host user set of to be shared directories in the container (via volumes) if HOST_MAP is set