diff -Nru mdadm-3.3/debian/changelog mdadm-3.3/debian/changelog
--- mdadm-3.3/debian/changelog	2016-03-24 22:39:54.000000000 +0000
+++ mdadm-3.3/debian/changelog	2016-04-11 18:34:53.000000000 +0000
@@ -1,3 +1,9 @@
+mdadm (3.3-2ubuntu7) xenial; urgency=medium
+
+  * Do not start when inside a container (LP: #1568993)
+
+ -- Simon Deziel <simon.deziel@gmail.com>  Mon, 11 Apr 2016 18:33:45 +0000
+
 mdadm (3.3-2ubuntu6) xenial; urgency=medium
 
   * debian/cotrol: Drop MTA Recommends to a Suggests (LP #1549319)
diff -Nru mdadm-3.3/debian/mdadm.init mdadm-3.3/debian/mdadm.init
--- mdadm-3.3/debian/mdadm.init	2015-12-11 09:03:08.000000000 +0000
+++ mdadm-3.3/debian/mdadm.init	2016-04-11 18:33:36.000000000 +0000
@@ -46,6 +46,12 @@
 
 case "${1:-}" in
   start)
+    if [ -x /usr/bin/systemd-detect-virt ] && /usr/bin/systemd-detect-virt --quiet --container; then
+      log_daemon_msg "Not starting MD monitoring service in container"
+      log_end_msg 0
+      exit 0
+    fi
+
     if is_true $START_DAEMON; then
       log_daemon_msg "Starting MD monitoring service" "mdadm --monitor"
       mkdir -p $RUNDIR