Extremely lightweight development environment for a web application running a React front-end and Flask API back-end. The front-end connects to the back-end by making HTTP requests for desired data. React and Flask are containerized and managed with Docker Compose.

Create React App allows us to very easily create a React app with no build configuration. React is currently one of the most popular front-end Javascript libraries for building UIs.

Flask is a lightweight, highly-customizable micro-framework for Python. It let's us build really simple web applications quickly (the "hello world" app is literally 5 lines of code). Flask doesn't come built-in with much, and if you're looking to integrate a more robust back-end framework with React (say, Ruby on Rails), I'd recommend checking out this blog post.

Docker maintains software and all of its dependencies within a "container", which can make collaborating and deploying simpler. Docker Compose is a tool for easily managing applications running multiple Docker containers.

Firstly, download Docker desktop and follow its instructions to install it. This allows us to start using Docker containers.

Create a local copy of this repository and run

docker-compose build

This spins up Compose and builds a local development environment according to our specifications in docker-compose.yml. Keep in mind that this file contains settings for development, and not production.

After the containers have been built (this may take a few minutes), run

docker-compose up

This one command boots up a local server for Flask (on port 5000) and React (on port 3000). Head over to

http://localhost:3000/ 

to view an incredibly underwhelming React webpage listing two fruits and their respective prices. Though the apparent result is underwhelming, this data was retrieved through an API call to our Flask server, which can be accessed at

http://localhost:5000/api/v1.0/test

The trailing '/api/v1.0/test' is simply for looks, and can be tweaked easily in api/app.py. The front-end logic for consuming our API is contained in client/src/index.js. The code contained within these files simply exists to demonstrate how our front-end might consume our back-end API.

Finally, to gracefully stop running our local servers, you can run

docker-compose down

in a separate terminal window or press control + C.

• Add boilerplate for running tests locally and through continuous integration.
• Add boilerplate for configuring production-ready settings and deployment.

Feel free to use the code in this repository however you wish. Details are provided in LICENSE.md.