diff --git a/.dockerignore b/.dockerignore
index 1e9c8b5..7002228 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,5 +1,4 @@
 node_modules
-dist
 coverage
 logs
 *.log
diff --git a/Jenkinsfile b/Jenkinsfile
index f813e7f..b1035a6 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -156,7 +156,17 @@ pipeline {
       }
       steps {
         script {
-          runCmd("docker build -f dockerfile -t ${env.DOCKER_IMAGE} .")
+          if (isUnix()) {
+            runCmd("""
+              test -f dist/main.js
+              docker build -f dockerfile -t ${env.DOCKER_IMAGE} .
+            """.stripIndent())
+          } else {
+            runCmd('', """
+              if not exist dist\\main.js exit /b 1
+              docker build -f dockerfile -t ${env.DOCKER_IMAGE} .
+            """.stripIndent())
+          }
         }
       }
     }
diff --git a/README.md b/README.md
index b8c0a74..7a693f1 100644
--- a/README.md
+++ b/README.md
@@ -67,7 +67,7 @@ pnpm start:dev
 
 ```bash
 pnpm start          # 普通启动
-pnpm start:prod     # 构建后按 production 环境启动
+pnpm start:prod     # 按 production 环境运行已构建的 dist/main
 pnpm run build      # Nest 构建
 pnpm run lint       # ESLint 检查
 pnpm test           # 单元测试
diff --git a/dockerfile b/dockerfile
index 526ca62..fb581ec 100644
--- a/dockerfile
+++ b/dockerfile
@@ -1,21 +1,19 @@
-# 引用 Node 22 官方 Debian slim 镜像，避免非官方 tag 在镜像源里解析失败
 FROM node:22-bookworm-slim
 
-# 指定工作目录
 WORKDIR /app
 
-# 先拷贝依赖清单，利用 Docker 缓存加速依赖安装
+ENV NODE_ENV=production
+
 COPY package.json pnpm-lock.yaml ./
 
-# 项目使用 pnpm-lock.yaml，镜像内也统一使用 pnpm 安装依赖
+# 生产镜像只安装运行依赖，dist 由 Jenkins Build stage 提前产出。
 RUN corepack enable \
   && corepack prepare pnpm@9 --activate \
-  && pnpm install --frozen-lockfile
+  && pnpm install --prod --frozen-lockfile
 
-# 拷贝业务代码
-COPY . .
+# dist 由 Jenkins 的 Build stage 生成，这里只打包运行产物。
+COPY dist ./dist
 
-# 声明暴露端口号
 EXPOSE 48085
 
-CMD ["pnpm", "run", "start:prod"]
+CMD ["node", "dist/main"]
diff --git a/package.json b/package.json
index 9069148..4739e00 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "start": "nest start",
     "start:dev": "nest start --watch",
     "start:debug": "nest start --debug --watch",
-    "start:prod": "nest build && cross-env NODE_ENV=production node dist/main",
+    "start:prod": "cross-env NODE_ENV=production node dist/main",
     "lint": "eslint \"{src,apps,libs,test}/**/*.ts\"",
     "lint:fix": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
     "test": "jest",