docker

docker+flask+mysql

阮一峰docker

阮一峰docker-compose

  1. 每个container相当于一个虚拟机，有自己的ip地址

  2. Dockerfile

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FROM python:3
EXPOSE 5001
WORKDIR /what
COPY requirements.txt ./
RUN pip install -r requirements.txt
COPY . /what
CMD ["python", "main.py"]
  1. docker-compose.yml
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version: '3'
services:
  db:
    image: mysql:5
    container_name: mydb
    environment:
      - MYSQL_ROOT_PASSWORD=root
      - MYSQL_DATABASE=mingtest
    ports:
      - "3307:3306"
    volumes:
      - ~/Data/mysql:/var/lib/mysql
  web:
    build: .
    container_name: myweb
    ports:
      - "5001:5001"
    links:
      - db
  1. requirements.txt
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Flask
pymysql
flask-restful
  1. main.py
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from flask import Flask
from flask_restful import Api, Resource
app = Flask(__name__)
api = Api(app)
class HelloWorld(Resource):
  def get(self):
    return {'hello': 'world'}

api.add_resource(HelloWorld, '/')
if __name__ == '__main__':
  app.run(host="0.0.0.0", port=5001, debug=True)
  1. docker-compose ps
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Name        Command      State                Ports          
mydb    docker-entrypoint.sh mysqld   Up      0.0.0.0:3307->3306/tcp, 33060/tcp
myweb   python main.py                Up      0.0.0.0:5001->5001/tcp
  1. 连接msql
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mysql -h127.0.0.1 -P3307 -uroot -proot
  1. shell进正在运行的docker
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docker container exec -it 43a38e5c1965 bash