Caddy Server Configuration

This project automatically sets up a web server that routes traffic to multiple services based on environment variables you provide. Instead of manually writing configuration files, you tell the system where each domain should point, and it builds everything for you.

Here's what it does in practice: imagine you're running several different services on your computer or network—maybe a web app on port 3000, an API on port 8080, and a chat service on port 9000. You want each one accessible from its own domain (like app.example.com, api.example.com, chat.example.com). Rather than hand-editing configuration files, you just set environment variables like "CADDY_app_example_com=myservice:3000" and the system automatically creates the right routing rules and handles HTTPS certificates for you.

The magic happens through Docker. The project uses Caddy, which is a modern web server, and wraps it so that whenever you start the container with your environment variables set, it generates a complete configuration file on the fly. Each domain you define gets its own rules that forward requests transparently to your actual service and automatically enables WebSocket support (useful for real-time features). It also handles SSL/TLS certificates automatically—you just provide your email address, and the system gets free HTTPS working.

This approach saves time if you're managing multiple services and don't want to manually maintain configuration files. You'd use it when running microservices, multiple Node.js apps, or any setup where several services need to be exposed on different domain names with HTTPS enabled. Instead of logging into a server and editing text files, you spin up a container with environment variables and you're done.