Docker pull 503 Service Unavailable

Today, one of my colleagues asked me to try to download a docker image because he encountered a network issue. 

Then I tried and found out I had the exact issue as he had.

λ docker pull tiangolo/uwsgi-nginx-flask

Using default tag: latest

Error response from daemon: Get https://registry-1.docker.io/v2/tiangolo/uwsgi-nginx-flask/manifests/latest: received unexpected HTTP status: 503 Service Unavailable

Obviously, this is not a network issue, it's docker's registry issue.

So if you can't wait, you can use a mirror registry to download the docker images you want. Here are two examples. 

Docker official china mirror (Fast in China, slow outside):

docker pull registry.docker-cn.com/tiangolo/uwsgi-nginx-flask

Google Cloud's mirror (less images)

docker pull mirror.gcr.io/library/mysql

--

Feng