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

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

internal/middleware/cors.go

@@ -0,0 +1,21 @@
+package middleware
+
+import (
+	"github.com/gofiber/fiber/v3"
+)
+
+// CORS 跨域中间件
+func CORS() fiber.Handler {
+	return func(c fiber.Ctx) error {
+		c.Set("Access-Control-Allow-Origin", "*")
+		c.Set("Access-Control-Allow-Credentials", "true")
+		c.Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
+		c.Set("Access-Control-Allow-Methods", "POST, OPTIONS, GET, PUT, DELETE, PATCH, HEAD")
+
+		if c.Method() == "OPTIONS" {
+			return c.SendStatus(fiber.StatusNoContent)
+		}
+
+		return c.Next()
+	}
+}

internal/middleware/logger.go

@@ -0,0 +1,31 @@
+package middleware
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/gofiber/fiber/v3"
+)
+
+// Logger 日志中间件
+func Logger() fiber.Handler {
+	return func(c fiber.Ctx) error {
+		start := time.Now()
+		err := c.Next()
+		latency := time.Since(start)
+
+		fmt.Printf("%s - [%s] \"%s %s %s %d %s \"%s\" %s\"\n",
+			c.IP(),
+			time.Now().Format(time.RFC1123),
+			c.Method(),
+			c.Path(),
+			c.Protocol(),
+			c.Response().StatusCode(),
+			latency,
+			c.Get("User-Agent"),
+			"",
+		)
+
+		return err
+	}
+}

internal/middleware/recovery.go

@@ -0,0 +1,24 @@
+package middleware
+
+import (
+	"github.com/gofiber/fiber/v3"
+)
+
+// Recovery 恢复中间件
+func Recovery() fiber.Handler {
+	return func(c fiber.Ctx) error {
+		defer func() {
+			if r := recover(); r != nil {
+				c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
+					"errors": []fiber.Map{
+						{
+							"code":    "INTERNAL_ERROR",
+							"message": "Internal server error",
+						},
+					},
+				})
+			}
+		}()
+		return c.Next()
+	}
+}

internal/middleware/repo.go

@@ -0,0 +1,13 @@
+package middleware
+
+import (
+	"github.com/gofiber/fiber/v3"
+)
+
+// RepoMiddleware 仓库名中间件（如果需要的话）
+func RepoMiddleware() fiber.Handler {
+	return func(c fiber.Ctx) error {
+		// 可以在这里处理仓库名相关的逻辑
+		return c.Next()
+	}
+}