linux:~/hello # pip install -r requirements.txt
linux:~/hello # python app.py
linux:~/hello # curl http://127.0.0.1:8080
linux:~/hello # docker build -t hello .
linux:~/hello # docker run -itd -p8080:8080 --name hello hello
linux:~/hello # docker stop hello
linux:~/hello # docker-compose up -d
linux:~/hello # docker-compose stop