Docker volume test

app.py

from flask import Flask
from redis import Redis
import os
app = Flask(__name__)
redis = Redis(host='redis', port=6379)

@app.route('/')
def hello():
    redis.incr('hits')
    return 'Hello World! I have been seen %s times.' % redis.get('hits')

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

docker-compose.yml

web:
  build: .
  command: python app.py
  ports:
    - "5000:5000"
  volumes:
    - .:/code
  links:
    - redis
redis:
  image: redis

Dockerfile

FROM python:2.7
ADD . /code
WORKDIR /code
RUN pip install -r requirements.txt

requirements.txt

flask
redis