docker: add dns for ubuntu os install, change INTERFACES to em1 for test stack
@@ -9,6 +9,9 @@ max-lease-time 7200;
ignore-client-uids true;
deny duplicates;
+option domain-name-servers 172.31.128.250;
+option routers 172.31.128.254;
+
subnet 172.31.128.0 netmask 255.255.240.0 {
range 172.31.128.2 172.31.143.254;
option vendor-class-identifier "PXEClient";
