# BuildSettings

> The BuildSettings object in the Guv API.

## Fields

| Field | Type | Description |
| --- | --- | --- |
| `builder` | `railpack`, `dockerfile`, `image` | Default `railpack`. |
| `dockerfile` | string or null |  |
| `context` | string or null | Build context directory. Defaults to `root`. |

\* always present

## Example

```json
{
  "builder": "railpack",
  "dockerfile": "services/api/Dockerfile",
  "context": "string"
}
```