How to dockerize your Flask application

Introduction:

The objective of this post is to dockerise a minimalistic flask application. Let’s take an example of a simple flask program and dockerise it.

A Simple Flask Application:

The below code is a bare minimum flask application with a single end point /hello. Let’s say the module name is my_flask.py.

my_flask.py

from flask import Flask, jsonify

app = Flask(__name__)


@app.route("/hello", methods=["GET"])
def say_hello():
    return jsonify({"msg": "Hello from Flask"})


if __name__ == "__main__":
    # Please do not set debug=True in production
    app.run(host="0.0.0.0", port=5000, debug=True)

Tags: Application Flask