然后docker-compose up报错

报错errno 2 找不到app.py这个文件。这三个文件都是老师的代码仓库拉下来的。

[root@host-192-168-167-170 flask-redis-compose]# cat app.py 
from flask import Flask
from redis import Redis
import os
import socket

app = Flask(__name__)
redis = Redis(host=os.environ.get('REDIS_HOST', '127.0.0.1'), port=6379)


@app.route('/')
def hello():
    redis.incr('hits')
    return 'Hello Container World! I have been seen %s times and my hostname is %s.\n' % (redis.get('hits'),socket.gethostname())


if __name__ == "__main__":
    app.run(host="0.0.0.0", port=5000, debug=True)

[root@host-192-168-167-170 flask-redis-compose]# cat docker-compose.yml
version: "3"

services:

  redis:
    image: redis

  web:
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - 8080:5000
    environment:
      REDIS_HOST: redis

[root@host-192-168-167-170 flask-redis-compose]# cat Dockerfile 
FROM python:2.7
LABEL maintaner="Peng Xiao xiaoquwl@gmail.com"
COPY . /app
WORKDIR /app
RUN pip install flask redis
EXPOSE 5000
CMD [ "python", "app.py" ]