ref #8: [feat] add config for docker daemon

adapter/config/model.py

@@ -40,6 +40,11 @@ class OtelConfig:
     metric_export_interval: int
 
 
+@dataclass(frozen=True, slots=True)
+class DockerConfig:
+    base_url: str
+
+
 @dataclass(frozen=True, slots=True)
 class SandboxConfig:
     image: str
@@ -68,5 +73,6 @@ class AppConfig:
     metrics: MetricsConfig
     tracing: TracingConfig
     otel: OtelConfig
+    docker: DockerConfig
     sandbox: SandboxConfig
     security: SecurityConfig