What is Flask? Flask is a micro web framework written in Python. It provides you with tools, libraries and technologies that allow you to build a web application.  To learn more on Flask jump into  this  official doc. Flask App The idea is to create a simple Flask application that exposes multiple rest endpoints and dockerize it. Directory Structure We all need is a python file, a requirement file that install the Flask library and a Dockerfile for building image. ├── app.py ├── Dockerfile └── requirements.txt $ cat app.py from flask import Flask app = Flask(__name__) @app.route('/') def webapp():     return 'Hello world!' @app.route('/version') def webapp_version():     return 'Version: v1'      @app.route('/desc') def webapp_desc():     return 'A simple web app developed for demo purpose' if __name__ == "__main__":     app.run(debug=True) $ cat requirements.txt ...