docker pull镜像时报错

Question

我在拉取镜像时，总是下载不了，报这样的错。请问是什么原因？如何解决？

$ sudo docker pull jupyter/jupyterhub
Using default tag: latest
latest: Pulling from jupyter/jupyterhub
3be020ef5d53: Pulling fs layer 
a6ae39d5de27: Pulling fs layer 
53edc248c850: Pulling fs layer 
2ec411e8581b: Pulling fs layer 
ff5a9885bb1c: Pulling fs layer 
58ff83677668: Pulling fs layer 
4011f9cc84dd: Pulling fs layer 
c5c48ff79ffc: Pulling fs layer 
72d94d2ef49a: Pulling fs layer 
9913dffcd1e2: Pulling fs layer 
211309e80840: Pulling fs layer 
860aac654fb0: Pulling fs layer 
4c1b642ceda5: Pulling fs layer 
3be020ef5d53: Pull complete 
5a7e779541c9: Download complete 
673860eb3fcb: Download complete 
cccda61854ad: Download complete 
b3b1404070b6: Download complete 
dab4341d6221: Download complete 
c96992c66b17: Download complete 
a3bd3751109d: Verifying Checksum 
f89d3b450eac: Download complete 
6d63004b6886: Download complete 
7e1ad4f59ea4: Download complete 
fd5445f17a96: Download complete 
d3a1f33e8a5a: Already exists 
c22013c84729: Already exists 
d74508fb6632: Already exists 
91e54dfb1179: Already exists 
ff6a52bb5dff: Already exists 
65f6189d96c0: Already exists 
2bdbdc94f5f9: Already exists 
172a4d23f0db: Already exists 
e89f5d34b67d: Already exists 
90ba00f3f3ac: Already exists 
d5ae19dc314b: Already exists 
eb52461ba975: Already exists 
Pulling repository docker.io/jupyter/jupyterhub
Error while pulling image: Get https://index.docker.io/v1/repositories/jupyter/jupyterhub/images: dial tcp: lookup index.docker.io: no such host

Answer 1

用国内镜像。。或者FQ