curl --request GET \
  --url https://api.ppinfra.com/gpu-instance/openapi/v1/gpu/instances \
  --header 'Authorization: <authorization>'

{
  "instances": [
    {
      "id": "<string>",
      "name": "<string>",
      "clusterId": "<string>",
      "clusterName": "<string>",
      "status": "<string>",
      "imageUrl": "<string>",
      "imageAuthId": "<string>",
      "command": "<string>",
      "cpuNum": "<string>",
      "memory": "<string>",
      "gpuNum": "<string>",
      "portMappings": [
        {
          "port": 123,
          "type": "<string>"
        }
      ],
      "productId": "<string>",
      "productName": "<string>",
      "rootfsSize": 123,
      "volumeMounts": [
        {
          "type": "<string>",
          "size": "<string>",
          "id": "<string>",
          "mountPath": "<string>"
        }
      ],
      "statusError": {
        "state": "<string>",
        "message": "<string>"
      },
      "envs": [
        {
          "key": "<string>",
          "value": "<string>"
        }
      ],
      "kind": "<string>",
      "billingMode": "<string>",
      "endTime": "<string>"
    }
  ]
}