Mastering Docker Containerization

Final Project: Containerizing a Scalable Multi-Tier Web Application

This assignment requires you to demonstrate your mastery of Docker by containerizing a complete full-stack application. You must implement a three-tier architecture consisting of a frontend (React/Vue), a backend API (Node.js/Python), and a persistent database (PostgreSQL/MongoDB). Your tasks are as follows: 1. Dockerization: Create optimized Dockerfiles for both the frontend and backend services using multi-stage builds to ensure minimal image sizes. 2. Orchestration: Write a docker-compose.yml file that defines all three services, ensuring proper service dependencies using the 'depends_on' condition. 3. Networking: Define a custom bridge network to facilitate communication between the application layers while isolating the database from external access. 4. Persistence: Implement Docker Volumes to ensure that database data remains persistent even after the containers are stopped or removed. 5. Configuration: Use Environment Variables for sensitive data and configuration settings, ensuring no secrets are hardcoded in the Dockerfiles. 6. Reliability: Add Health Checks to the database service to ensure the backend only attempts to connect when the database is fully initialized. 7. Documentation: Provide a README file detailing the commands required to build and run the entire stack.