docker

hello.py

#!/usr/bin/pythonimport sysprint("hello there!")print(sys.version)

Dockerfile

#!/usr/bin/pythonFROM python:3.8COPY hello.py /tmp/CMD ["python", "/tmp/hello.py"]

# docker build -t hello .# docker run hello

-　命令行执行

docker run -it python:slim bashpython -c "import os; print(os.system('ls -l'))"python -c "import sys; print(sys.version)"

• GET

get_req.py

#!/usr/bin/pythonimport requests as reqresp = req.get("http://webcode.me")print(resp.text)

Dockerfile

FROM python:slimRUN pip install requestsCOPY get_req.py /tmp/CMD ["python", "/tmp/get_req.py"]

# docker build -t pygetreq .# docker run pygetreq

• flask

app.py

#!/usr/bin/pythonfrom flask import Flaskapp = Flask(__name__)@app.route('/')def hello():    return 'Hello there!'

Dockerfile

FROM python:slimCOPY app.py /app/WORKDIR /appRUN pip install flaskRUN export FLASK_APP=app.pyEXPOSE 5000CMD ["/usr/local/bin/flask", "run", "--host", "0.0.0.0"]

# docker build -t flasksimple .# docker run -p 5000:5000 flasksimple

• MariaDB

app.py

#!/usr/bin/pythonimport pymysqlcon = pymysql.connect(host='localhost', user='user7',            password='7user', database='testdb', port=3306)try:    with con.cursor() as cur:        cur.execute('SELECT * FROM cities')        rows = cur.fetchall()        for row in rows:            print(f'{row[0]}, {row[1]}, {row[2]}')finally:    con.close()

Dockerfile

FROM mariadbRUN apt-get update && apt-get install -y \    python3.8 \    python3-pipRUN pip3 install pymysqlADD schema.sql /docker-entrypoint-initdb.dENV MYSQL_USER=user7ENV MYSQL_PASSWORD=7userENV MYSQL_DATABASE=testdbENV MYSQL_ROOT_PASSWORD=s$cretEXPOSE 3306

# docker build -t flasksimple .# docker run -p 3306:3306 pymaria-simple

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