A little dns server to resolve `localdocker` to the ip address of your boot2docker VM.

boot2docker-dns.js

// This needs to listen on port 53, so run with sudo node boot2docker-dns.js
var exec = require('child_process').exec;
var jack = require('dnsjack').createServer();
jack.route('localdocker', function(domain, callback){
    exec('sudo -u $SUDO_USER boot2docker ip', function(err, stdout, stderr){
        callback(null, stdout);
    });
});
jack.listen();