Dockerfile for minimal flask app

Dockerfile

FROM ubuntu
RUN echo 'deb http://archive.ubuntu.com/ubuntu precise universe' | tee -a /etc/apt/sources.list
RUN apt-get update
RUN apt-get install -y python python-virtualenv
RUN mkdir -p /usr/src/app
ADD requirements.txt /usr/src/app/
RUN virtualenv /usr/src/app/env
RUN /usr/src/app/env/bin/pip install -r /usr/src/app/requirements.txt
ADD . /usr/src/app
EXPOSE 5000
ENTRYPOINT /usr/src/app/env/bin/python /usr/src/app/main.py

main.py

from flask import Flask
app = Flask(__name__)

@app.route("/")
def hello():
    return "Hello World!"

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

requirements.txt

Flask