From f3ab23e0c3b259480decb04d4a6c5172c2a1ed1e Mon Sep 17 00:00:00 2001
From: ay095411 <32893510+ay095411@users.noreply.github.com>
Date: Thu, 24 Sep 2026 06:33:30 +0800
Subject: [PATCH] =?UTF-8?q?fix(docker):=20=E5=9C=A8=20go=20mod=20download?=
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Co-authored-by: ddcat666 <26564566+ddcat666@users.noreply.github.com>
---
 backend/Dockerfile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/backend/Dockerfile b/backend/Dockerfile
index b98a7ee32..227dbda65 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -40,6 +40,11 @@ RUN apk add --no-cache build-base
 
 WORKDIR /src/backend
 COPY backend/go.mod backend/go.sum ./
+# go.mod 含本地 replace（github.com/casdoor/go-sms-sender => ./third_party/go-sms-sender）。
+# go mod download 解析依赖时就需要读到该目录的 go.mod，而这行执行时完整源码尚未复制，
+# 缺了它会报 "reading third_party/go-sms-sender/go.mod: no such file or directory"。
+# 后面 COPY backend ./ 会覆盖为完整源码，这里只为让依赖解析通过。
+COPY backend/third_party ./third_party
 # 模块保留在普通镜像层中，供后续编译及跨 Runner 的 GHA 层缓存复用。
 RUN go mod download
 COPY backend ./