diff --git a/frontend/Dockerfile b/frontend/Dockerfile
index 73341a6fa..656d52ccd 100644
--- a/frontend/Dockerfile
+++ b/frontend/Dockerfile
@@ -7,10 +7,6 @@ WORKDIR /app
ENV NODE_OPTIONS="--max-old-space-size=4096"
ENV VITE_IS_DOCKER=true
-# 文件大小限制(MB)，通过构建参数传入
-ARG MAX_FILE_SIZE_MB=50
-ENV VITE_MAX_FILE_SIZE_MB=${MAX_FILE_SIZE_MB}
-
# 复制依赖文件
COPY package*.json ./
COPY packages/xlsx-0.20.2.tgz ./packages/xlsx-0.20.2.tgz
@@ -34,11 +30,14 @@ COPY --from=build-stage /app/dist /usr/share/nginx/html
# 复制nginx配置模板文件
COPY nginx.conf /etc/nginx/templates/default.conf.template
+# 复制启动脚本
+COPY docker-entrypoint.sh /docker-entrypoint.sh
+RUN chmod +x /docker-entrypoint.sh
+
# 设置默认环境变量（MB）
ENV MAX_FILE_SIZE_MB=50
# 暴露端口
EXPOSE 80
-# 启动时将 MAX_FILE_SIZE_MB 转换为带单位的 MAX_FILE_SIZE，然后替换到 nginx 配置
-CMD ["/bin/sh", "-c", "export MAX_FILE_SIZE=${MAX_FILE_SIZE_MB}M && envsubst '${MAX_FILE_SIZE}' < /etc/nginx/templates/default.conf.template > /etc/nginx/conf.d/default.conf && nginx -g 'daemon off;'"]
\ No newline at end of file
+ENTRYPOINT ["/docker-entrypoint.sh"]
\ No newline at end of file
diff --git a/frontend/docker-entrypoint.sh b/frontend/docker-entrypoint.sh
new file mode 100644
index 000000000..8cd6c7598
--- /dev/null
+++ b/frontend/docker-entrypoint.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# 生成运行时配置文件，注入环境变量到前端
+cat > /usr/share/nginx/html/config.js << EOF
+window.__RUNTIME_CONFIG__ = {
+ MAX_FILE_SIZE_MB: ${MAX_FILE_SIZE_MB:-50}
+};
+EOF
+
+# 处理 nginx 配置
+export MAX_FILE_SIZE=${MAX_FILE_SIZE_MB}M
+envsubst '${MAX_FILE_SIZE}' < /etc/nginx/templates/default.conf.template > /etc/nginx/conf.d/default.conf
+
+# 启动 nginx
+exec nginx -g 'daemon off;'
diff --git a/frontend/index.html b/frontend/index.html
index e2ab8ef2b..f5538cebd 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -15,6 +15,7 @@
+
diff --git a/frontend/public/config.js b/frontend/public/config.js
new file mode 100644
index 000000000..2861e2413
--- /dev/null
+++ b/frontend/public/config.js
@@ -0,0 +1,4 @@
+// 运行时配置（本地开发默认值，Docker 环境会被 entrypoint 脚本覆盖）
+window.__RUNTIME_CONFIG__ = {
+ MAX_FILE_SIZE_MB: 50
+};
diff --git a/frontend/src/utils/index.ts b/frontend/src/utils/index.ts
index db9389bc8..c6a36560f 100644
--- a/frontend/src/utils/index.ts
+++ b/frontend/src/utils/index.ts
@@ -1,7 +1,19 @@
import { MessagePlugin } from "tdesign-vue-next";
-// 从环境变量获取最大文件大小(MB)，默认30MB
-const MAX_FILE_SIZE_MB = Number(import.meta.env.VITE_MAX_FILE_SIZE_MB) || 50;
+// 声明全局运行时配置类型
+declare global {
+ interface Window {
+ __RUNTIME_CONFIG__?: {
+ MAX_FILE_SIZE_MB?: number;
+ };
+ }
+}
+
+// 从运行时配置获取最大文件大小(MB)，支持 Docker 环境动态配置
+// 优先级：运行时配置 > 构建时环境变量 > 默认值 50MB
+const MAX_FILE_SIZE_MB = window.__RUNTIME_CONFIG__?.MAX_FILE_SIZE_MB
+ || Number(import.meta.env.VITE_MAX_FILE_SIZE_MB)
+ || 50;
const MAX_FILE_SIZE_BYTES = MAX_FILE_SIZE_MB * 1024 * 1024;
export function generateRandomString(length: number) {