diff --git a/docker/Dockerfile b/docker/Dockerfile
index 030b440..5f14e80 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -8,6 +8,9 @@ WORKDIR /app
 # APT 镜像源（默认使用清华 TUNA；如需切回官方源可在 build 时覆盖该参数）
 # 示例：docker build --build-arg APT_MIRROR=deb.debian.org -t connecthub .
 ARG APT_MIRROR=mirrors.tuna.tsinghua.edu.cn
+# Microsoft ODBC 仓库版本（trixie/debian13 当前签名链不稳定，默认改用 debian12）
+ARG MS_DEBIAN_VERSION=12
+ARG MS_CODENAME=bookworm
 
 RUN set -eux; \
     # 兼容 Debian 新旧 sources 格式（/etc/apt/sources.list 或 deb822 的 /etc/apt/sources.list.d/debian.sources）
@@ -30,10 +33,8 @@ RUN set -eux; \
     apt-transport-https \
     && rm -rf /var/lib/apt/lists/*; \
     curl -fsSL https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor -o /usr/share/keyrings/microsoft-prod.gpg; \
-    . /etc/os-release; \
     arch="$(dpkg --print-architecture)"; \
-    codename="${VERSION_CODENAME:-bookworm}"; \
-    echo "deb [arch=${arch} signed-by=/usr/share/keyrings/microsoft-prod.gpg] https://packages.microsoft.com/debian/${VERSION_ID}/prod ${codename} main" \
+    echo "deb [arch=${arch} signed-by=/usr/share/keyrings/microsoft-prod.gpg] https://packages.microsoft.com/debian/${MS_DEBIAN_VERSION}/prod ${MS_CODENAME} main" \
       > /etc/apt/sources.list.d/microsoft-prod.list; \
     apt-get update; \
     ACCEPT_EULA=Y apt-get install -y --no-install-recommends \