let user know bake is now supported

Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com>

pkg/compose/build.go

@@ -22,6 +22,7 @@ import (
 	"fmt"
 	"os"
 	"strings"
+	"sync"
 
 	"github.com/compose-spec/compose-go/v2/types"
 	"github.com/containerd/platforms"
@@ -32,6 +33,7 @@ import (
 	"github.com/docker/buildx/util/buildflags"
 	xprogress "github.com/docker/buildx/util/progress"
 	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/hints"
 	cliopts "github.com/docker/cli/opts"
 	"github.com/docker/compose/v2/internal/tracing"
 	"github.com/docker/compose/v2/pkg/api"
@@ -63,6 +65,10 @@ func (s *composeService) Build(ctx context.Context, project *types.Project, opti
 	}, s.stdinfo(), "Building")
 }
 
+const bakeSuggest = "Compose now can delegate build to bake for better performances\nJust set COMPOSE_BAKE=true"
+
+var suggest sync.Once
+
 //nolint:gocyclo
 func (s *composeService) build(ctx context.Context, project *types.Project, options api.BuildOptions, localImages map[string]string) (map[string]string, error) {
 	imageIDs := map[string]string{}
@@ -133,6 +139,11 @@ func (s *composeService) build(ctx context.Context, project *types.Project, opti
 		w     *xprogress.Printer
 	)
 	if buildkitEnabled {
+		if hints.Enabled() {
+			suggest.Do(func() {
+				fmt.Fprintln(s.dockerCli.Out(), bakeSuggest) //nolint:errcheck
+			})
+		}
 		builderName := options.Builder
 		if builderName == "" {
 			builderName = os.Getenv("BUILDX_BUILDER")