diff --git a/Dockerfile b/Dockerfile
index 0bb59df..afc222b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,25 +1,24 @@
-FROM golang:1.23 AS builder
+FROM golang:1.23-bookworm AS builder
 
+ARG IMG_PATH=/opt/pics
 ARG EXHAUST_PATH=/opt/exhaust
 RUN apt update && apt install --no-install-recommends libvips-dev -y && mkdir /build
 COPY go.mod /build
 RUN cd /build && go mod download
 
 COPY . /build
-RUN cd /build && sed -i "s|\"\"|\"${EXHAUST_PATH}\"|g" config.json  \
+RUN cd /build && sed -i "s|.\/pics|${IMG_PATH}|g" config.json  \
+    && sed -i "s|\"\"|\"${EXHAUST_PATH}\"|g" config.json  \
     && sed -i 's/127.0.0.1/0.0.0.0/g' config.json  \
     && go build -ldflags="-s -w" -o webp-server .
 
-FROM alpine:latest
+FROM debian:bookworm-slim
+
+RUN apt update && apt install --no-install-recommends libvips ca-certificates -y && rm -rf /var/lib/apt/lists/* &&  rm -rf /var/cache/apt/archives/*
 
-RUN apk update && \
-    apk add --no-cache libvips ca-certificates && \
-    rm -rf /var/cache/apk/*
-    
 COPY --from=builder /build/webp-server  /usr/bin/webp-server
 COPY --from=builder /build/config.json /etc/config.json
-    
+
 WORKDIR /opt
 VOLUME /opt/exhaust
 CMD ["/usr/bin/webp-server", "--config", "/etc/config.json"]
-    
diff --git a/handler/remote.go b/handler/remote.go
index faaea98..4230491 100644
--- a/handler/remote.go
+++ b/handler/remote.go
@@ -3,6 +3,7 @@ package handler
 import (
 	"fmt"
 	"io"
+	"mime"
 	"net/http"
 	"os"
 	"path"
@@ -125,3 +126,37 @@ func pingURL(url string) (string, int64, time.Time) {
 
 	return etag, size, lastModified
 }
+
+func streamFile(c *fiber.Ctx, filePath string) error {
+	file, err := os.Open(filePath)
+	if err != nil {
+		log.Errorf("无法打开文件: %s, 错误: %v", filePath, err)
+		return c.Status(fiber.StatusInternalServerError).SendString("无法打开文件")
+	}
+	defer file.Close()
+
+	stat, err := file.Stat()
+	if err != nil {
+		log.Errorf("无法获取文件信息: %s, 错误: %v", filePath, err)
+		return c.Status(fiber.StatusInternalServerError).SendString("无法获取文件信息")
+	}
+
+	contentType := mime.TypeByExtension(path.Ext(filePath))
+	if contentType == "" {
+		contentType = "application/octet-stream"
+	}
+
+	c.Set(fiber.HeaderContentType, contentType)
+	c.Set(fiber.HeaderContentLength, strconv.FormatInt(stat.Size(), 10))
+
+	log.Infof("开始流式传输文件: %s, 大小: %d bytes", filePath, stat.Size())
+
+	err = c.SendStream(file)
+	if err != nil {
+		log.Errorf("文件流式传输失败: %s, 错误: %v", filePath, err)
+		return err
+	}
+
+	log.Infof("文件流式传输完成: %s", filePath)
+	return nil
+}
diff --git a/handler/router.go b/handler/router.go
index 0b3e2ee..e6f30b8 100644
--- a/handler/router.go
+++ b/handler/router.go
@@ -72,7 +72,7 @@ func Convert(c *fiber.Ctx) error {
 	// 检查文件是否已经在 EXHAUST_PATH 中
 	if helper.FileExists(exhaustFilename) {
 		log.Infof("文件已存在于 EXHAUST_PATH，直接提供服务: %s", exhaustFilename)
-		return c.SendFile(exhaustFilename)
+		return streamFile(c, exhaustFilename)
 	}
 
 	// 文件不在 EXHAUST_PATH 中，需要处理
@@ -110,7 +110,7 @@ func Convert(c *fiber.Ctx) error {
 	// 检查是否为允许的图片文件
 	if !helper.IsAllowedImageFile(filename) {
 		log.Infof("不允许的文件类型或非图片文件: %s", reqURI)
-		return c.SendFile(rawImageAbs)
+		return streamFile(c, rawImageAbs)
 	}
 
 	// 处理图片
@@ -148,5 +148,5 @@ func Convert(c *fiber.Ctx) error {
 		go schedule.ScheduleCleanup(rawImageAbs)
 	}
 
-	return c.SendFile(exhaustFilename)
+	return streamFile(c, exhaustFilename)
 }