diff --git a/Dockerfile b/Dockerfile
index 7052fc9..8d09443 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,8 +20,8 @@
 ARG APP_NAME=debian
 ARG APP_VER=11
 
-# 设置默认仓库地址，默认为本地仓库
-ARG REGISTRY_URL="docker.colovu.com"
+# 设置默认仓库地址，默认为本地仓库；定义时需要包含末尾的`/`
+ARG REGISTRY_URL="docker.colovu.com/"
 
 # 设置 apt-get 源：default / ustc / aliyun
 ARG APT_SOURCE=aliyun
@@ -30,7 +30,7 @@ ARG APT_SOURCE=aliyun
 ARG LOCAL_URL=""
 
 # 0. 预处理 ======================================================================
-FROM --platform=${TARGETPLATFORM:-linux/amd64} ${REGISTRY_URL}/library/debian:${APP_VER}-slim as builder
+FROM --platform=${TARGETPLATFORM:-linux/amd64} ${REGISTRY_URL}library/debian:${APP_VER}-slim as builder
 
 # 声明需要使用的全局可变参数
 ARG APP_NAME
@@ -68,7 +68,7 @@ RUN set -eux; \
 	chmod +x /usr/local/bin/${appName};
 
 # 1. 生成镜像 =====================================================================
-FROM --platform=${TARGETPLATFORM:-linux/amd64} ${REGISTRY_URL}/library/debian:${APP_VER}-slim
+FROM --platform=${TARGETPLATFORM:-linux/amd64} ${REGISTRY_URL}library/debian:${APP_VER}-slim
 
 # 声明需要使用的全局可变参数
 ARG APP_NAME