cmd: seed math rand

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

cmd/buildx/main.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/containerd/containerd/pkg/seed"
 	"github.com/docker/buildx/commands"
 	"github.com/docker/buildx/version"
 	"github.com/docker/cli/cli-plugins/manager"
@@ -24,6 +25,10 @@ import (
 
 var experimental string
 
+func init() {
+	seed.WithTimeAndRand()
+}
+
 func main() {
 	if os.Getenv("DOCKER_CLI_PLUGIN_ORIGINAL_CLI_COMMAND") == "" {
 		if len(os.Args) < 2 || os.Args[1] != manager.MetadataSubcommandName {