增加CF-CDN说明

Author: sky22333

README.md

@@ -55,6 +55,53 @@ docker run -d \
   ghcr.io/sky22333/hub-proxy
 ```
 
+---
+---
+
+
+<details>
+  <summary>CF-CDN获取用户真实IP</summary>
+  
+
+-   替换`Caddyfile`配置
+
+```
+hub.{$DOMAIN} {
+    reverse_proxy * ghproxy:5000 {
+        header_up X-Real-IP {http.request.header.CF-Connecting-IP}
+        header_up X-Forwarded-For {http.request.header.CF-Connecting-IP}
+        header_up X-Forwarded-Proto {http.request.scheme}
+        header_up CF-IPCountry {http.request.header.CF-IPCountry}
+    }
+}
+
+docker.{$DOMAIN} {
+    @v2_manifest_blob path_regexp v2_rewrite ^/v2/([^/]+)/(manifests|blobs)/(.*)$
+    handle @v2_manifest_blob {
+        rewrite * /v2/library/{re.v2_rewrite.1}/{re.v2_rewrite.2}/{re.v2_rewrite.3}
+    }
+
+    reverse_proxy * docker:5000 {
+        header_up X-Real-IP {http.request.header.CF-Connecting-IP}
+        header_up X-Forwarded-For {http.request.header.CF-Connecting-IP}
+        header_up X-Forwarded-Proto {http.request.scheme}
+        header_up CF-IPCountry {http.request.header.CF-IPCountry}
+    }
+}
+
+ghcr.{$DOMAIN} {
+    reverse_proxy * ghcr:5000 {
+        header_up X-Real-IP {http.request.header.CF-Connecting-IP}
+        header_up X-Forwarded-For {http.request.header.CF-Connecting-IP}
+        header_up X-Forwarded-Proto {http.request.scheme}
+        header_up CF-IPCountry {http.request.header.CF-IPCountry}
+    }
+}
+```
+
+</details>
+
+
 ---
 ---
 

ghproxy/main.go

@@ -16,7 +16,7 @@ import (
 )
 
 const (
-	sizeLimit = 1024 * 1024 * 1024 * 10 // 允许的文件大小，默认10GB
+	sizeLimit = 1024 * 1024 * 1024 * 2 // 允许的文件大小，默认2GB
 	host      = "0.0.0.0"               // 监听地址
 	port      = 5000                    // 监听端口
 )

ghproxy/skopeo_service.go

@@ -1030,7 +1030,7 @@ func cleanupTempFiles() {
 		}
 
 		// 如果总大小超过10GB，清理所有文件，防止恶意下载导致磁盘爆满
-		if totalSize > 10*1024*1024*1024 { // 15GB
+		if totalSize > 10*1024*1024*1024 {
 			fmt.Printf("临时文件总大小超过10GB (当前: %.2f GB)，清理所有文件\n", float64(totalSize)/(1024*1024*1024))
 			cleanAll()
 		} else {