Setup images build and github actions(without release).

Signed-off-by: xuezhaojun <zxue@redhat.com>

cmd/registration/main.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	goflag "flag"
+	"fmt"
+	"math/rand"
+	"os"
+	"time"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+
+	utilflag "k8s.io/component-base/cli/flag"
+	"k8s.io/component-base/logs"
+
+	"open-cluster-management.io/registration/pkg/cmd/hub"
+	"open-cluster-management.io/registration/pkg/cmd/spoke"
+	"open-cluster-management.io/registration/pkg/cmd/webhook"
+	"open-cluster-management.io/registration/pkg/version"
+)
+
+// The registration binary contains both the hub-side controllers for the
+// registration API and the spoke agent.
+
+func main() {
+	rand.Seed(time.Now().UTC().UnixNano())
+
+	pflag.CommandLine.SetNormalizeFunc(utilflag.WordSepNormalizeFunc)
+	pflag.CommandLine.AddGoFlagSet(goflag.CommandLine)
+
+	logs.AddFlags(pflag.CommandLine)
+	logs.InitLogs()
+	defer logs.FlushLogs()
+
+	command := newRegistrationCommand()
+	if err := command.Execute(); err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+}
+
+func newRegistrationCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "registration",
+		Short: "Spoke Cluster Registration",
+		Run: func(cmd *cobra.Command, args []string) {
+			if err := cmd.Help(); err != nil {
+				fmt.Fprintf(os.Stderr, "%v\n", err)
+			}
+			os.Exit(1)
+		},
+	}
+
+	if v := version.Get().String(); len(v) == 0 {
+		cmd.Version = "<unknown>"
+	} else {
+		cmd.Version = v
+	}
+
+	cmd.AddCommand(hub.NewController())
+	cmd.AddCommand(spoke.NewAgent())
+	cmd.AddCommand(webhook.NewWebhook())
+	return cmd
+}