# docker buildx dap Start debug adapter protocol compatible debugger (EXPERIMENTAL) ### Subcommands | Name | Description | |:-------------------------------|:--------------| | [`build`](buildx_dap_build.md) | Start a build | ### Options | Name | Type | Default | Description | |:----------------|:---------|:--------|:-----------------------------------------------------------| | `--builder` | `string` | | Override the configured builder instance | | `-D`, `--debug` | `bool` | | Enable debug logging | | `--on` | `string` | `error` | When to pause the adapter ([always, error]) (EXPERIMENTAL) |