cd ./python-docker
pip3 install Flask
pip3 freeze | grep Flask >> requirements.txt
得到了一个 requirements.txt 文件：
Flask==2.0.3
创建 app.py 文件
from flask import Flask
app = Flask(__name__)
@app.route('/')
def hello_world():
return 'Hello, Docker!'
运行程序：
$env:FLASK_APP = "app"
flask run
* Serving Flask app 'app' (lazy loading)
* Environment: production
WARNING: This is a development server. Do not use it in a production deployment.
Use a production WSGI server instead.
* Debug
Original: https://blog.csdn.net/qq_27868061/article/details/123152550
Author: crayon-shin-chan
Title: docker入门之构建python应用
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