Download

Pre-pull a target tag into the local docker cache. Idempotent.

Returns 412 if the sidecar is unreachable — the actual docker pull runs inside the sidecar, which is the only piece holding docker.sock.

curl -X POST "https://example.com/admin/upgrade/download" \  -H "Content-Type: application/json" \  -d '{    "tag": "string"  }'

{}

{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string",
      "input": null,
      "ctx": {}
    }
  ]
}