refactor: Update service and repository methods to use context

- Refactored multiple service and repository methods to accept context as a parameter, enhancing consistency and enabling better control over request lifecycles.
- Updated handlers to utilize context in method calls, improving error handling and performance.
- Cleaned up Dockerfile by removing unnecessary whitespace.

internal/handler/customskin_handler.go

@@ -219,7 +219,7 @@ func (h *CustomSkinHandler) GetTexture(c *gin.Context) {
 
 	// 增加下载计数（异步）
 	go func() {
-		_ = h.container.TextureRepo.IncrementDownloadCount(texture.ID)
+		_ = h.container.TextureRepo.IncrementDownloadCount(ctx, texture.ID)
 	}()
 
 	// 流式传输文件内容