Setting Docker Image Caching

How to Enable and Configure Image Caching on an Instance

Prerequisite

• You must have an instance in your project. If not, learn how to launch an instance.

If you launched your instance using a distribution image provided by NIPA Cloud Space, Docker Image Caching is already enabled, and no further configuration is necessary.

Instructions

For images that are not NIPA Cloud Space distribution images, you must configure the Docker registry mirror to point to https://registry-cache.nipa.cloud.

1. Edit the Docker configuration file

Access and edit the /etc/docker/daemon.json file using the following command:

$nano /etc/docker/daemon.json

Add the following content to the file:

{
    "registry-mirror": "https://registry-cache.nipa.cloud"
}

Then, exit the editor and save the file.

2. Restart the Docker service

Restart the Docker service using the following command:

systemctl restart docker.service

3. Verify the configuration

Check that the configuration was applied successfully by running the following command:

docker info

The output under "Registry Mirrors" should now show https://registry-cache.nipa.cloud, confirming the process is complete.