cmd/dockerd: Fix overriding OTEL resource

https://github.com/moby/buildkit/commit/e35879281554953599787ae6346193466dc3ea46
changed that field to a function and added an `OverrideResource`
function that allows to override it.

Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>

builder/builder-next/controller.go

@@ -67,11 +67,11 @@ func newController(ctx context.Context, rt http.RoundTripper, opt Opt) (*control
 }
 
 func getTraceExporter(ctx context.Context) trace.SpanExporter {
-	exp, err := detect.Exporter()
+	span, _, err := detect.Exporter()
 	if err != nil {
 		log.G(ctx).WithError(err).Error("Failed to detect trace exporter for buildkit controller")
 	}
-	return exp
+	return span
 }
 
 func newSnapshotterController(ctx context.Context, rt http.RoundTripper, opt Opt) (*control.Controller, error) {

cmd/dockerd/daemon.go

@@ -242,7 +242,7 @@ func (cli *DaemonCli) start(opts *daemonOptions) (err error) {
 
 	// Override BuildKit's default Resource so that it matches the semconv
 	// version that is used in our code.
-	detect.Resource = resource.Default()
+	detect.OverrideResource(resource.Default())
 	detect.Recorder = detect.NewTraceRecorder()
 
 	tp, err := detect.TracerProvider()