“docker run hello-world”，授权错误

Question

我在mac上成功安装了docker。

docker -v
Docker version 1.13.1, build 092cba3.

但是当我这样做时：

docker run hello-world
Unable to find image 'hello-world:latest' locally
docker: Error response from daemon: Get https://registry-1.docker.io/v2/: dial tcp 192.168.65.1:443: getsockopt: connection refused.
See 'docker run --help'.

我在浏览器中粘贴https://registry-1.docker.io/v2/并收到此错误：

{"errors":[{"code":"UNAUTHORIZED","message":"authentication required","detail":null}]}

我需要什么样的授权？