feat: add Docker support for containerized deployment

Dockerfile.dev

@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+# 开发环境Dockerfile
+FROM python:3.11-slim
+
+WORKDIR /app
+
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    FLASK_APP=web_app.py \
+    FLASK_ENV=development
+
+# 安装系统依赖
+RUN apt-get update && apt-get install -y \
+    tesseract-ocr \
+    tesseract-ocr-chi-sim \
+    tesseract-ocr-eng \
+    libgl1-mesa-glx \
+    libglib2.0-0 \
+    && rm -rf /var/lib/apt/lists/*
+
+# 复制requirements文件
+COPY requirements.txt .
+
+# 安装Python依赖
+RUN pip install --no-cache-dir -r requirements.txt
+
+# 复制应用代码
+COPY . .
+
+# 创建必要的目录
+RUN mkdir -p templates static/css static/js logs data models
+
+# 暴露端口
+EXPOSE 5000
+
+# 开发模式：使用Flask开发服务器
+CMD ["python", "start_web.py"]
+