Pinata was removed, and some settings were moved to the graphical interface.
Hacker way to change some settings. From the forum :
cd ~/Library/Containers/com.docker.docker/Data/database/com.docker.driver.amd64-linux
echo '{"storage-driver":"aufs","dns":["8.8.8.8"],"insecure-registries":["yourdomain.com:5000"],"debug":true}' > etc/docker/daemon.json
git add etc/docker/daemon.json;
git commit -m 'etc/docker/daemon.json change';
git VMware xhyve (git commit hook?). Docker for Mac OS X .
Docker Mac yourdomain.com:5000 .
docker run -it -rm busybox cat/etc/resolv.conf , 8.8.8.8