Dockerized Flask Example

app.py

"""A simple Flask app meant to be run inside a Docker container"""
import flask

app = flask.Flask(__name__)

@app.route('/')
def get_home():
    return 'Hello, world!'

app.run(debug=True, host='0.0.0.0')

Dockerfile

FROM ubuntu:14.04

# Install Python Setuptools
RUN apt-get install -y python-setuptools

# Install pip
RUN easy_install pip

# Add and install Python Modules
ADD requirements.txt /src/requirements.txt
RUN cd /src; pip install -r requirements.txt

# Bundle app source
add . /src

# Expose the port
EXPOSE 5000

# Run
CMD ["python", "/src/application.py"]


# To build this image:
# $ docker build -t flask-ex .

# To run this with shared directories
# $ docker run -d -p 5000:5000 --name flask -v $(pwd):/src flask-ex

requirements.txt

Flask==0.10.1
itsdangerous==0.24
Jinja2==2.8
MarkupSafe==0.23
Werkzeug==0.11.4
wheel==0.24.0