diff --git a/Dockerfile b/Dockerfile
index 628ddf6..0f6f673 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,22 @@
-FROM mcr.microsoft.com/playwright/python:v1.58.0-jammy
+FROM python:3.11-slim
 
 WORKDIR /app
 
+# 设置环境变量，防止 Python 写 .pyc 文件，并强制无缓冲输出
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
 COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt
+
+# 1. 安装 Python 依赖
+# 2. 仅安装 Chromium 浏览器
+# 3. 仅安装 Chromium 所需的系统级依赖
+# 4. 清理 apt 缓存，极致压缩镜像体积
+RUN pip install --no-cache-dir -r requirements.txt \
+    && playwright install chromium \
+    && playwright install-deps chromium \
+    && rm -rf /var/lib/apt/lists/* \
+    && rm -rf /root/.cache/pip
 
 COPY main.py .