69 lines
2.8 KiB
Docker
69 lines
2.8 KiB
Docker
# -*- coding: utf-8 -*-
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# 小内存优化版 Dockerfile（适用于 512MB-1GB 内存的 Linux 机器）
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FROM python:3-slim
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# 设置工作目录
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WORKDIR /app
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# 设置环境变量（优化内存使用）
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ENV PYTHONUNBUFFERED=1 \
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PYTHONDONTWRITEBYTECODE=1 \
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FLASK_APP=web_app.py \
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FLASK_ENV=production \
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PYTHONHASHSEED=0 \
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MALLOC_ARENA_MAX=2
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# 安装系统依赖（最小化安装）
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RUN apt-get update && apt-get install -y --no-install-recommends \
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tesseract-ocr \
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tesseract-ocr-chi-sim \
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tesseract-ocr-eng \
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&& rm -rf /var/lib/apt/lists/* \
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&& apt-get clean
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# 复制requirements文件
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COPY requirements.txt .
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# 创建最小化的 requirements.txt（移除GUI相关依赖）
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RUN echo "scikit-learn>=1.3.0" > requirements-minimal.txt && \
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echo "pandas>=2.0.0" >> requirements-minimal.txt && \
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echo "numpy>=1.24.0" >> requirements-minimal.txt && \
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echo "joblib>=1.3.0" >> requirements-minimal.txt && \
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echo "requests>=2.31.0" >> requirements-minimal.txt && \
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echo "python-dotenv>=1.0.0" >> requirements-minimal.txt && \
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echo "python-dateutil>=2.8.0" >> requirements-minimal.txt && \
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echo "Pillow>=10.0.0" >> requirements-minimal.txt && \
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echo "pytesseract>=0.3.10" >> requirements-minimal.txt && \
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echo "opencv-python-headless>=4.8.0" >> requirements-minimal.txt && \
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echo "Flask>=3.0.0" >> requirements-minimal.txt && \
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echo "Werkzeug>=3.0.0" >> requirements-minimal.txt && \
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echo "gunicorn" >> requirements-minimal.txt
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# 安装Python依赖（使用最小化依赖，opencv使用headless版本）
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RUN pip install --no-cache-dir --upgrade pip && \
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pip install --no-cache-dir -r requirements-minimal.txt && \
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python -m pip install --force-reinstall gunicorn && \
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python -c "import gunicorn; print(f'Gunicorn version: {gunicorn.__version__}')" && \
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python -m gunicorn --version || echo "Gunicorn installed, using python -m gunicorn"
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# 复制应用代码
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COPY . .
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# 创建必要的目录
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RUN mkdir -p templates static/css static/js logs data models
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# 设置权限
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RUN chmod +x start_web.py
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# 暴露端口
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EXPOSE 5000
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# 健康检查（不使用 requests，直接用 Python）
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HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
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CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:5000/health').read()" || exit 1
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# 使用gunicorn启动应用（小内存配置：单worker，减少内存占用）
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# 使用 python -m gunicorn 确保可以找到 gunicorn（即使可执行文件不在PATH中也能工作）
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CMD ["python", "-m", "gunicorn", "--bind", "0.0.0.0:5000", "--workers", "1", "--threads", "2", "--timeout", "120", "--worker-class", "sync", "--max-requests", "1000", "--max-requests-jitter", "100", "--preload", "--access-logfile", "-", "--error-logfile", "-", "web_app:app"]
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