Docker DNS

gistfile1.sh

#!/bin/bash
# edit /etc/default/docker to add "DOCKER_OPTS="--bip=172.17.42.1/16 --dns=172.17.42.1"
#  with 172.17.42.1 => ip of your docker0 interface you can retreive with the following command
DOCKER_IP=`sudo ifconfig docker0 | awk '/inet addr/ {split ($2,A,":"); print A[2]}'`
echo "Dockers $DOCKER_IP"

docker rm -f skydns skydock

NAMESERVER=`nslookup -query=ns google.com | awk '/Server:/{split($0,A,":"); print A[2]}' | tr -d ' ' | tr -d '\t'`
echo "NameServer $NAMESERVER"

docker run -d --name skydns  -p $DOCKER_IP:53:53/udp              crosbymichael/skydns -nameserver $NAMESERVER:53 -domain docker
docker run -d --name skydock -v /var/run/docker.sock:/docker.sock crosbymichael/skydock -ttl 30 -environment dev -s /docker.sock -domain docker -name skydns -plugins /plugins/containerEnv.js

echo nameserver $DOCKER_IP | sudo resolvconf -a eth0.inet