How to change the docker image source

To replace the Docker image source, edit the Docker configuration file and add the "registry-mirrors" item to specify the URL of the image source to use. Save the configuration file and restart the Docker service. By checking Docker information or pulling the image, you can verify that the image source has been updated.

How to replace Docker image source

By default, Docker retrieves images from Docker Hub. However, you can change it to another mirror source as needed.

step:

1. Edit Docker configuration file:

On Linux and macOS, edit the /etc/docker/daemon.json file. On Windows, edit C:\ProgramData\docker\config\daemon.json file.

2. Add a mirror source:

Find or add the "registry-mirrors" item in the file. It should be an array containing a list of mirror source URLs:

 {
  "registry-mirrors": ["https://mirror.example.com", "https://mirror2.example.com"]
}

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3. Save and restart Docker:

Save the file and restart the Docker service. On Linux and macOS, use the following command:

 sudo systemctl restart docker

On Windows, use the following command:

 Restart-Service docker

4. Verify the image source:

To verify that the image source has been updated, you can check the Docker configuration file or pull the image:

 docker info | grep "Registry Mirrors"
docker pull nginx

When pulling an image, Docker tries to pull the image from the image source. If the pull is successful, it means that the mirror source has been updated.

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