adding sortlist to /etc/resolv.conf in container

[Marc]

Hi,

I was wondering if anyone knows how I could get this sortlist entry added to an 
/etc/resolv.conf?

sortlist 192.168.x.0/255.255.255.0

Could it be that I maybe have 'older' cni drivers as from such a config below I 
don't see search and domain being added to /etc/resolve.conf. I see however 
this nameserver being added.

{
  "name": "cni-test",
  "type" : "mesos",
  "delegate": {
.
.
.
    "ipam": {
.
.
      "resolvConf": "/etc/resolv.conf",
      "ranges": [
      [
        {
.
.
.
        }
      ] ]
    },
    "dns": {
      "nameservers": ["192.168.0.1"],
      "search": ["local2"],
      "domain": "thisdomain"
    }
  }
}