Docker拉取镜像失败，download failed after attempts 6 IO Timeout

报错如下：

$ docker pull halohub/halo:2.6.1
2.6.1: Pulling from halohub/halo
d1669123f281: Retrying in 1 second 
2ec73b48ae40: Retrying in 1 second 
64ed7897b25d: Retrying in 1 second 
eefea741bc5a: Waiting 
f2f24d94d687: Waiting 
48c8491958ed: Waiting 
3979576ccfec: Waiting 
4f4fb700ef54: Waiting 
dfee92811a23: Waiting 
159e8e7d59d2: Waiting 
error pulling image configuration: download failed after attempts=6: dial tcp 104.18.121.25:443: i/o timeout

解决方案

找到合适的源： https://gist.github.com/y0ngb1n/7e8f16af3242c7815e7ca2f0833d3ea6

$ export REPO=docker.m.daocloud.io

$ docker pull ${REPO}/halohub/halo:2.6.1
2.6.1: Pulling from halohub/halo
d1669123f281: Pull complete 
2ec73b48ae40: Pull complete 
64ed7897b25d: Pull complete 
eefea741bc5a: Pull complete 
f2f24d94d687: Pull complete 
48c8491958ed: Pull complete 
3979576ccfec: Pull complete 
4f4fb700ef54: Pull complete 
dfee92811a23: Pull complete 
159e8e7d59d2: Pull complete 
Digest: sha256:8303d0580bfc0e1aea100b4dee3232fbea0e9a2245cdd100999f4fc87bea22e3
Status: Downloaded newer image for docker.m.daocloud.io/halohub/halo:2.6.1
docker.m.daocloud.io/halohub/halo:2.6.1

最后更新一下tag：

docker tag b1fea9deec18 halohub/halo:2.6.1