How to change the docker image source in China

You can switch to the domestic mirror source. The steps are as follows: 1. Edit the configuration file /etc/docker/daemon.json and add the mirror source address; 2. After saving and exiting, restart the Docker service sudo systemctl restart docker to improve the image download speed and stability.

How to switch to a domestic mirror source in Docker

Switch steps:

1. Edit Docker configuration file /etc/docker/daemon.json
2. Add the following:

 {
  "registry-mirrors": ["https://registry.docker-cn.com"]
}

3. Save the file and exit
4. Restart Docker service:

 sudo systemctl restart docker

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Explanation of principle:

In Docker, images are downloaded from remote mirror repository. By default, Docker uses the official Docker Hub image repository. However, for mainland Chinese users, accessing Docker Hub may be affected by network latency and restrictions.

To solve this problem, you can switch Docker's image source to domestic image sources, such as Alibaba Cloud image warehouse or NetEase Cloud image warehouse. This can greatly improve image download speed and stability.

Notes:

• Use comma-separation when adding multiple mirror sources.
• Make sure the added domestic mirror source is available.
• If you encounter problems after changing the configuration, you can try to restore the default settings and restart the Docker service.

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