The solution consists of a backend API built with Ruby on Rails and a frontend user interface built with React. The API fetches flight departure and delay data from the data providers, processes it, and delivers the information via differet endpoints. The frontend provides a user-friendly interface to browse the flights information.

1. Ensure you have Ruby, Bundler, and PostgreSQL installed on your machine.
2. Navigate to the backend directory.
3. Install the required gems:

   bundle install

4. Set up the database:

   rails db:create db:migrate db:seed

5. Start the Rails server:

   rails server

The backend server will start at http:https://localhost:3000.

The frontend is a React application that allows users to browse the flight information provided by the backend API. It uses Tailwind CSS components to provide a modern and responsive user interface.

1. Ensure you have Node.js and Yarn installed on your machine.
2. Navigate to the frontend directory.
3. Install the required packages:

   yarn install

4. Start the React development server:

   yarn start

The frontend server will start at http:https://localhost:3000.

1. Ensure you have Docker and Docker Compose installed on your machine.
2. Navigate to the project root directory.
3. Run the following command to start both services:

   docker-compose up --build

The backend includes tests to ensure the API is functioning correctly. To run the tests, navigate to the backend directory and execute the following command:

rails test