getting-started-python

This is a sample Python application, using the Flask microframework, for use with Wercker. This application uses the 2.7:slim container obtained from the Docker Hub

Setup and Build

Firstly, ensure you have the wercker cli installed.

Now clone this repo and cd into the directory:

git clone https://github.com/wercker/getting-started-python.git
cd getting-started-python

To build and test the app:

wercker build

Running

You can run the sample app in a couple of different ways. With Flask installed locally along with Python, the first is to simply launch the sample app:

python app.py

Now point your browser at http://localhost:5000 to see:

Hello World!

or at http://localhost:5000/cities.json to see:

{"cities": ["San Francisco", "Amsterdam", "Berlin", "New York", "Tokyo"]}

The second, and more useful, way is to use the wercker dev command to launch the binary within a Docker container, using the base image defined in the box:id property at the top of the wercker.yml, like so:

wercker dev --expose-ports

The dev target inside wercker.yml uses the internal/watch step to dynamically reload the runtime container when sourcefile changes are detected, which allows you to quickly test changes without having to kill/rebuild/relaunch the container. For instance, add another city to the array on `app.py:14' like so:

data = {"cities" : ["San Francisco", "Amsterdam", "Berlin", "New York", "Tokyo", "London"]}

and then refresh your browser pointing to http://localhost:5000/cities.json to see:

["Amsterdam", "San Francisco", "Berlin", "New York", "Tokyo", "London"]

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Learn more at: http://devcenter.wercker.com