【Docker】Docker-Compose安装与使用

简介

安装

pip install -U docker-compose

# 检测
docker-compose --version

创建需要的文件

mkdir compose-project
cd compose-project
touch app.py requirements.txt Dockerfile docker-compose.yml

app.py

from flask import Flask
from redis import Redis

app = Flask(__name__)
redis = Redis(host='redis', port=6379)

@app.route('/')
def hello():
count = redis.incr('hits')
return 'Hello World! I have been seen {} times.\n'.format(count)

if __name__ == "__main__":
app.run(host="0.0.0.0", debug=True)

requirements.txt

flask
redis

Dockerfile

FROM python:3.4-alpine
ADD . /code
WORKDIR /code
RUN pip install -r requirements.txt
CMD ["python", "app.py"]

docker-compose.yml

version: '2'
services:
web:
build: .
ports:
- "5000:5000"
volumes:
- .:/code
redis:
image: "redis:alpine"

启动Compose

docker-compose up

# 新开一个shell，检测应用
curl localhost:5000