Update README.md #4

	# 使用官方 Python 基础镜像
	FROM python:3.9-slim
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	# 设置工作目录
	WORKDIR /app

	# 设置环境变量
	ENV PYTHONDONTWRITEBYTECODE=1 \
	PYTHONUNBUFFERED=1 \
	TZ=Asia/Shanghai

	# 安装系统依赖
	RUN apt-get update \
	&& apt-get install -y --no-install-recommends \
	build-essential \
	curl \
	libmagic1 \
	&& rm -rf /var/lib/apt/lists/* \
	&& ln -fs /usr/share/zoneinfo/${TZ} /etc/localtime \
	&& echo ${TZ} > /etc/timezone

	# 复制项目文件
	COPY requirements.txt .

	# 安装Python依赖
	RUN pip install --no-cache-dir -r requirements.txt

	# 复制应用程序代码
	COPY . .

	# 创建必要的目录
	RUN mkdir -p static/audio \
	&& chmod -R 755 static

	# 暴露端口
	EXPOSE 8005

	# 启动命令
	CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8005"]

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