在docker容器内的virtualenv上运行flask应用

Question

So I am trying to run a flask app inside of a virtualenv on a docker container.

My Dockerfile looks like this

FROM ubuntu:latest
MAINTAINER Gabriel Togni "togni@nmmi.edu"
RUN apt-get update -y
RUN apt-get install -y python-pip python-dev build-essential python-virtualenv
COPY . /app
WORKDIR /app

RUN virtualenv test

WORKDIR test

RUN /bin/bash -c "source test/bin/activate; pip install -r requirements.txt"

ENTRYPOINT /bin/bash -c "source test/bin/activate; python app.py"

It builds with no errors, it runs with no errors, but it is not working.

My requirements.txt file only has Flask==0.12.2 and my app.py looks like this

from flask import Flask
import sys
app = Flask(__name__)

@app.route("/")
def hello():
        if getattr(sys, "real_prefix", None) is not None:
                return "Maybe in a virtualenv"
        else:
                return "Probably not in a virtualenv"

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

I am trying to do this on an Ubuntu Server 16.04.3 LTS

EDIT--

The problem was fixed after I added the ; to my code on

RUN /bin/bash -c "source test/bin/activate; pip install -r requirements.txt"

ENTRYPOINT /bin/bash -c "source test/bin/activate; python app.py"

Answer 1

The entrypoint will be run in WORKDIR . Your file app.py is not on /app , which is your WORKDIR , it is on /app/test . You must send the path for the entrypoint command, as he doesn't find the file in current directory:

ENTRYPOINT /bin/bash -c "source bin/activate python test/app.py"