created start script.

Dockerfile

@@ -7,4 +7,4 @@ EXPOSE 53/udp
 
 VOLUME ["/etc/bind/zones", "/etc/bind/keys", "/etc/bind/scripts"]
 
-CMD /usr/sbin/named -g -u named -d 11
+CMD scripts/start.sh

scripts/start.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+named -g -u named -d 11