Retrieve 2DFS Images from Docker
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When using a local registry, you need to configure Docker to trust the local insecure registry.
To do this, use the following configuration for your Docker daemon configuration file (usually located at /etc/docker/daemon.json):
{
"features": {
"containerd-snapshotter": true
},
"insecure-registries": [
"<your-registry-host>:5000"
]
}
Replace <your-registry-host> with the hostname or IP address of your registry.
To retrieve a 2DFS image from a Docker registry, you can use the docker pull command. This command allows you to download images from a registry that supports the OCI+2DFS format.
Additionally, you can use a semantic tag in the form --<row from>.<col from>.<row to>.<col to> to define the partition of the image you want to pull.
Let’s say we pushed to our registry an OCI+2DFS image with 2 rows and 2 columns, like this:
| Row/Col | Col 0 | Col 1 |
|---|---|---|
| Row 0 | file1.txt | file2.txt |
| Row 1 | file3.txt | file4.txt |
If we want to pull the first element of the first row (file1.txt), we can use the following command:
docker pull <your-registry-host>:5000/test/myfirsttdfs:v1--0.0.0.0
To retrieve the entire image as OCI image, you can use the following command:
docker pull <your-registry-host>:5000/test/myfirsttdfs:v1--0.0.1.1
To retrieve all elements except for file3.txt, you can use the following command:
docker pull <your-registry-host>:5000/test/myfirsttdfs:v1--0.0.0.1--1.0.1.1
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