OSX上的Docker应用程序拒绝连接

Question

I'm messing about with Docker (using Docker Toolbox for OSX) and can't seem to get my application to work. It's a simple flask application which looks like this:

from flask import Flask

app = Flask(__name__)

@app.route('/')
def index():
    return 'Hello World!'

if __name__ == '__main__':
    app.run()

Now my Dockerfile contains the following

FROM python:2.7.11-wheezy

ADD ./application/* /opt/local/application/
ADD ./project-requirements.txt /opt/local/application/requirements.txt

RUN pip install -r /opt/local/application/requirements.txt

CMD ["/usr/local/bin/python", "/opt/local/application/app.py"]

EXPOSE 5000

I build the container by running docker build -t python_app . and subsequently boot the container by running docker -i -P python_app and see that the application is booted inside the container, as the output of the command is * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit) .

Now when I run docker ps I can see the container is running

CONTAINER ID        IMAGE               COMMAND                  CREATED              STATUS              PORTS                     NAMES
448defb349ce        python_app          "/usr/local/bin/pytho"   About a minute ago   Up About a minute   0.0.0.0:32769->5000/tcp   angry_jang

But when I try to curl the container, I get a connection refused error.

$ curl $(docker-machine ip default):32769
curl: (7) Failed to connect to 192.168.99.100 port 32769: Connection refused

I have no clue where I'm going wrong with this and any help is much appreciated!

Answer 1

I found the issue, I had to change

app.run()

to

app.run(host='0.0.0.0')

in the app.py file.