feat: complete OCI registry implementation with docker push/pull support

A lightweight OCI (Open Container Initiative) registry implementation written in Go.

internal/api/api.go

@@ -0,0 +1,61 @@
+package api
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net"
+
+	"gitea.loveuer.com/loveuer/cluster/internal/middleware"
+	"gitea.loveuer.com/loveuer/cluster/internal/module/registry"
+	"gitea.loveuer.com/loveuer/cluster/pkg/store"
+	"github.com/gofiber/fiber/v3"
+	"gorm.io/gorm"
+)
+
+func Init(ctx context.Context, address string, db *gorm.DB, store store.Store) error {
+	var (
+		err error
+		ln  net.Listener
+		cfg = fiber.Config{
+			BodyLimit: 1024 * 1024 * 1024 * 10, // 10GB limit for large image layers
+		}
+	)
+
+	app := fiber.New(cfg)
+
+	app.Use(middleware.Logger())
+	app.Use(middleware.Recovery())
+	app.Use(middleware.CORS())
+
+	// oci image apis
+	{
+		app.All("/v2/*", registry.Registry(ctx, db, store))
+	}
+
+	// registry image apis
+	{
+		registryAPI := app.Group("/api/v1/registry")
+		registryAPI.Get("/image/list", registry.RegistryImageList(ctx, db, store))
+	}
+
+	ln, err = net.Listen("tcp", address)
+	if err != nil {
+		return fmt.Errorf("failed to listen on %s: %w", address, err)
+	}
+
+	go func() {
+		if err := app.Listener(ln); err != nil {
+			log.Fatalf("Fiber server failed on %s: %v", address, err)
+		}
+	}()
+
+	go func() {
+		<-ctx.Done()
+		if err := app.Shutdown(); err != nil {
+			log.Fatalf("Failed to shutdown: %v", err)
+		}
+	}()
+
+	return nil
+}