update init for containers for recent changes

Signed-off-by: Justin Cormack <justin.cormack@docker.com>

pkg/init-container/bin/rc.init

@@ -1,10 +1,11 @@
 #!/bin/sh
 
 # execute other init processes
-INITS="$(find /etc/init.d -type f | sort)"
+INITS="$(find /etc/init.d ! -type d 2>/dev/null | sort)"
 for f in $INITS
 do
-	$f &
+	$f
 done
 
-wait
+# wait forever to keep container open
+while true; do sleep 2147483647; done