Convert into single docker image, change volume structure etc

Makefile inconsistent!

dockerbin/cron-command

@@ -0,0 +1,30 @@
+#!/bin/bash
+set -euo pipefail
+IFS=$'\n\t'
+
+# check lock
+lock=/var/run/cloner.pid
+
+dir_prefix=cloner
+
+max_jobs=${JOBS:-3}
+
+function die(){
+	echo $@ 1>&2
+	exit 1
+}
+
+# first, check process
+if [ -f $lock ] 
+then
+	pid=$(cat $lock)
+	# if it still runs, die not so quietly
+	[ -n "$pid" ] && [ -d /proc/$pid ] && die "Another process running!"
+fi
+# else make some mess and setup trap
+echo $BASHPID > $lock
+
+find /data -maxdepth 1 -type d -name "${dir_prefix}-*" | \
+	parallel --lb -j $max_jobs -n 1 run-mirror-update
+
+