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README.md

1-Tier Architecture — Task Tracker

A simple task tracker web app where the frontend (HTML), backend logic (Flask), and database (SQLite) all run inside a single container.

Architecture

[ Single Container ] Frontend (HTML) + Backend (Flask) + Database (SQLite)

Features

  • Add tasks via a web form
  • Mark tasks as done
  • Data persists in a SQLite file inside the container

Usage

Build

docker build -t task-tracker-1tier .

Run

docker run -d -p 5000:5000 --name task-app task-tracker-1tier

Visit http://localhost:5000

Tools Used

  • Flask (Python web framework)
  • SQLite (file-based database)
  • Docker

Note

This is a monolithic (1-tier) setup — everything runs in one container. This is not how production apps are typically deployed, but it's useful for understanding the baseline before moving to 2-tier and 3-tier architectures where components are separated into different containers.