docker-flask

Flask in Docker

Usage

To run hello world app, :8080 provides HTTP endpoint (to uWSGI), and :9000 provides uWSGI endpoint. So, let's try accessing via HTTP:

docker run -p 127.0.0.1:8080:8080 ypcs/flask:latest

now try to open http://127.0.0.1:8080/ , you should see familiar greeting.

To publish your own app, mount your app to /app, and provide FLASK_APP environment variable with correct value.

Eg.

docker run -v $(pwd)/myapp:/app -e FLASK_APP=myapp:app -p 127.0.0.1:8080:8080 ypcs/flask:latest

if you had app code like

myapp/myapp.py:

from flask import Flask
app = Flask(__name__)

@app.route("/")
def some_view():
    return "Hello myapp!"

Usually you shouldn't expose this HTTP endpoint directly to internet, but use eg. ypcs/nginx:latest as a reverse proxy.

Live reload

By default, you can manually reload the application by touching /tmp/reload-app. If you want your application to reload automatically after every save, set FLASK_RELOAD as true.