


In which folder should the image downloaded by docker be placed?
Docker image storage location
The image downloaded by Docker is stored in the following folder by default:
<code>/var/lib/docker/image</code>
This folder is located in the Docker installation directory and contains the download All images. Each image is stored in a separate subfolder, which contains the image's metadata and layer files.
Image storage mechanism
Docker stores images in a layered manner, which means that each new image is built based on one or more existing images. When a new image is downloaded, Docker first checks to see if it already exists in local storage. If it exists, there is no need to download it again. Otherwise, Docker will download the image from the registry and store it in the image
folder.
Change the default storage location
In some cases, you may need to store the image in a different location, such as to improve performance or save space. You can change the default storage location by setting the docker-root
flag:
<code>sudo dockerd --gpus all --storage-driver overlay2 --docker-root /path/to/new/storage/location</code>
Note that this change will not take effect until the Docker service is restarted.
Other storage options
In addition to the default storage location, Docker also provides other storage options, including:
- Distribution Storage: Store images on multiple nodes to improve availability and performance.
- Remote Storage: Store the image in a cloud storage service such as Amazon S3 or Google Cloud Storage to save local storage space.
- Custom Storage Driver: Create a custom storage driver to meet specific needs. For example, you can store images on your own NAS device.
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