Update Dockerfile

Dockerfile

@@ -2,8 +2,10 @@ FROM python:3.11-slim
 
 WORKDIR /app
 
-# 安装 Playwright 所需的系统依赖
+# 安装 Playwright 所需系统依赖 + git（用于 clone）
 RUN apt-get update && apt-get install -y \
+    git \
+    ca-certificates \
     libnss3 \
     libnspr4 \
     libatk1.0-0 \
@@ -19,21 +21,19 @@ RUN apt-get update && apt-get install -y \
     libasound2 \
     libpango-1.0-0 \
     libcairo2 \
-    git \
     && rm -rf /var/lib/apt/lists/*
 
-RUN git clone https://github.com/TheSmallHanCat/flow2api.git .
+ARG REPO_URL=https://github.com/TheSmallHanCat/flow2api.git
+ARG REPO_REF=main
 
+# clone 代码到 /app
+RUN git clone --depth 1 --branch "${REPO_REF}" "${REPO_URL}" .
 
-
-# 安装 Python 依赖
-COPY requirements.txt .
+# 安装 Python 依赖（来自仓库内 requirements.txt）
 RUN pip install --no-cache-dir -r requirements.txt
 
 # 安装 Playwright 浏览器
-RUN playwright install chromium
-
-COPY . .
+RUN python -m playwright install chromium
 
 EXPOSE 8000