/myflaskapp
├── app.py
├── requirements.txt
└── Dockerfile

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello():
    return "Hello, Dockerized Flask!"

flask==3.0.0
gunicorn==21.2.0

# 基礎(chǔ)鏡像
FROM python:3.9-slim

# 設(shè)置工作目錄
WORKDIR /app

# 安裝系統(tǒng)依賴
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc python3-dev \
    && rm -rf /var/lib/apt/lists/*

# 復(fù)制依賴清單
COPY requirements.txt .

# 安裝 Python 依賴
RUN pip install --no-cache-dir -r requirements.txt

# 復(fù)制應(yīng)用代碼
COPY . .

# 暴露端口
EXPOSE 5000

# 設(shè)置啟動(dòng)命令（使用 Gunicorn 生產(chǎn)服務(wù)器）
CMD ["gunicorn", "--bind", "0.0.0.0:5000", "app:app"]

docker build -t myflask:1.0 .

# 基礎(chǔ)運(yùn)行
docker run -d -p 5000:5000 --name flask_app myflask:1.0

# 帶環(huán)境變量（生產(chǎn)環(huán)境配置）
docker run -d -p 5000:5000 \
  -e FLASK_ENV=production \
  --name flask_prod \
  myflask:1.0

# 構(gòu)建階段
FROM python:3.9-slim as builder
WORKDIR /app
COPY requirements.txt .
RUN pip install --user -r requirements.txt

# 運(yùn)行階段
FROM python:3.9-slim
WORKDIR /app
COPY --from=builder /root/.local /root/.local
COPY . .
ENV PATH=/root/.local/bin:$PATH
CMD ["gunicorn", "--bind", "0.0.0.0:5000", "app:app"]

# 添加非 root 用戶
RUN useradd -m flaskuser && chown -R flaskuser:flaskuser /app
USER flaskuser

# 配置日志持久化
VOLUME /app/logs

# 健康檢查
HEALTHCHECK --interval=30s --timeout=3s \
  CMD curl -f http://localhost:5000/health || exit 1

# 檢查容器日志
docker logs flask_app

# 進(jìn)入容器調(diào)試
docker exec -it flask_app bash
curl localhost:5000

docker inspect flask_app | grep ExitCode
docker logs --tail 50 flask_app

CMD ["gunicorn", "--workers", "4", "--bind", "0.0.0.0:5000", "app:app"]

docker run -d -v flask_data:/app/data myflask:1.0

version: '3.8'

services:
  web:
    build: .
    ports:
      - "5000:5000"
    environment:
      - FLASK_ENV=production
    networks:
      - flask_net
    depends_on:
      - redis

  redis:
    image: redis:alpine
    volumes:
      - redis_data:/data
    networks:
      - flask_net

volumes:
  redis_data:

networks:
  flask_net:

docker-compose up -d --build

docker logs -f flask_app

docker stats flask_app

docker run --restart=always -d myflask:1.0