Image

Images are templates for containers, containing all files and configurations needed to run applications. Through the image management page, you can pull, view, and delete local images.

Image List

Go to Container > Image tab to view the local image list.

The list displays the following information:

• ID: Image ID
• Container Count: Number of containers using this image
• Image: Image name and tag
• Size: Disk space occupied by the image
• Created Time: Image creation time
• Actions: Delete, etc.

Pull Image

1. Click the Pull Image button
2. Enter the image name, e.g., nginx:latest, mysql:8.4
3. Click confirm to start pulling

Image name format: [registry_address/]image_name[:tag]

• nginx - Pull the latest tag of the official nginx image
• nginx:1.28 - Pull a specific version
• mysql:8.4 - Pull MySQL version 8.4
• registry.cn-hangzhou.aliyuncs.com/xxx/yyy:latest - Pull from Alibaba Cloud image registry

Note

Pulling Docker Hub images from servers in China may be slow. It is recommended to configure an image accelerator or use domestic image sources.

Delete Image

Select an image and click the Delete button to delete the image.

Note

If the image is being used by containers, you need to delete the related containers before deleting the image.

Clean Images

Click Clean Images to delete all unused images and free up disk space.

The cleanup operation will delete:

• Dangling images
• Images not used by any container

Image Sources

Docker Hub

Docker's official image registry, containing a large number of official and community images.

Common official images:

• nginx - Web server
• mysql / mariadb - Database
• redis - Cache
• postgres - PostgreSQL database
• node - Node.js runtime environment
• python - Python runtime environment

Domestic Image Sources

• Alibaba Cloud: registry.cn-hangzhou.aliyuncs.com
• Tencent Cloud: ccr.ccs.tencentyun.com
• Huawei Cloud: swr.cn-north-4.myhuaweicloud.com

Private Registry

If you have a private image registry, you can directly use the full image address to pull.