Age-calculator-flask-docker-ECS

This repository contains a simple Flask web application that calculates the age based on a user's date of birth, deployed using Docker and AWS ECS with Fargate. The goal of this project is to understand how Docker works, how to create Docker images, how to containerize a Python Flask application, and how to deploy it on AWS.

Project Overview

The application is an age calculator that: Takes a user's name and date of birth as input. Calculates the age in years and months based on the current date (July 08, 2025, 03:42 PM IST). Displays the result on the same page with a styled interface using CSS.

Technologies Used

• Python 3.13: For the Flask backend.
• Flask: A micro web framework for building the application.
• HTML/CSS: For the frontend interface.
• Docker: For containerizing the application.
• AWS IAM: For authenticating and managing access to AWS services.
• AWS ECR: For storing and managing Docker images.
• AWS ECS with Fargate: For deploying and running the containerized application.
• AWS Security Groups: For controlling network access to the ECS service.

Build the Docker Image

docker build -t calculate_age .

Run the Container

docker run -p 8080:5000 calculate_age

For Pushing Docker image to AWS ECR

Refer to this offical AWS blog - https://docs.aws.amazon.com/AmazonECR/latest/userguide/docker-push-ecr-image.html

Screenshots of Docker image created

Screenshots of Webpage running in docker container

Screenshot of pushing Docker image to ECR using Amazon CLI

Screenshot of creating ECS Cluster and related task definition with Fargate

Screenshot of final webapp deployed in same public ip address