Settings to create a Docker image for a simple Flask project. This project has been created for a tutorial described on Kalimadev Blog.
docker build -t simple_flask .
The Docker file creates a container starting from Ubuntu 14.04:
FROM ubuntu:14.04
then it installs Python:
RUN apt-get install -y -q build-essential python-gdal python-simplejson
RUN apt-get install -y python python-pip wget
RUN apt-get install -y python-dev
and finally creates a virtual environment:
RUN pip install virtualenv
Required Python projects are installed through pip in the virtual environment straight from GitHub by setting
the repositories URL in the requirements.txt file:
watchdog
Flask
flask-cors
https://github.com/Kalimaha/simple_flask/archive/master.zip
https://github.com/Kalimaha/simple_flask_blueprint/archive/master.zip
docker images
| REPOSITORY | TAG | IMAGE ID | CREATED | VIRTUAL SIZE |
|---|---|---|---|---|
| simple_flask | latest | b5dc209bf592 | 5 minutes ago | 503 MB |
docker run -it -p 5000:5000 simple_flask /deployment/env/bin/python /deployment/start.py
This command executes the simple Python script contained in the project to import the main Flask app and run it:
from simple_flask.rest import rest as rest_engine
rest_engine.run_engine('0.0.0.0')The Flask host has been set to 0.0.0.0 in order to work with Docker.
The application is now up and running and it is possible to access it through the browser at:
http://localhost:5000/Kalimaha/
that shows:
Hello Kalimaha from CORE!
The app has a blueprint that can be accessed at:
http://localhost:5000/test/Kalimaha/
that shows:
Hello Kalimaha!
