🚀 DevOps Challenge: Go Application Deployment

Welcome to the DevOps challenge! This repository contains a simple Go web application that you need to containerize, test, and deploy using modern DevOps practices.

📋 Challenge Overview

Your task is to implement a complete DevOps pipeline for this Go application. You'll be evaluated on your ability to:

1. Containerize the application with Docker
2. Implement CI/CD using GitHub Actions
3. Deploy to Kubernetes

🎯 What You Need to Create

1. Dockerfile

Create a production-ready Dockerfile

2. GitHub Actions Workflow

Create a comprehensive CI/CD pipeline.

3. Kubernetes Manifests

Create the K8s resources

🏗️ Application Details

This is a simple Go web service with the following endpoints:

• GET / - Homepage with application info
• GET /health - Health check endpoint (returns 204 No Content)
• GET /info - Application information
• GET /nytime - Current New York time
• GET /fetch - Fetches data from an external API with API key authentication

Environment Variables:

• PORT - Server port (default: 8080)
• ENVIRONMENT - Environment name (default: development)
• VERSION - Application version (default: 1.0.0)
• API_KEY - API key for external API authentication (default: dummy-secret-key-12345)

🚀 Getting Started

1. Clone and explore the repository

2. Run locally to understand the application:

   go run main.go
   curl -v http://localhost:8080/health
   curl http://localhost:8080/nytime

3. Run tests to ensure everything works:

   go test -v
   go test -v -cover

4. Test the fetch endpoint with API key:

   # Set a custom API key
   export API_KEY="your-secret-api-key"
   
   # Test the fetch endpoint
   curl http://localhost:8080/fetch
   
   # Or test with the default API key
   curl http://localhost:8080/fetch

🔐 API Key Configuration

The application uses an API_KEY environment variable to authenticate with external APIs. The fetch endpoint (/fetch) automatically includes this API key in the X-API-Key header when making requests to external services.

• Default value: dummy-secret-key-12345 (for development/testing)
• Production use: Set API_KEY to your actual API key
• Security: Never commit real API keys to version control