Running multiple .NET services locally often causes port conflicts when developers clone a repo. Using Traefik as a reverse proxy in Docker Compose eliminates this by routing traffic via hostname instead of port numbers. Each service exposes the same internal port (8080), and Traefik labels define routing rules. The post covers the full docker-compose and Dockerfile setup, how Traefik's entrypoints/routers/services model works, HTTPS with Let's Encrypt, common debugging pitfalls (port mismatches, missing labels, backtick syntax), and a hybrid dev workflow combining Traefik in Docker with dotnet watch for hot reload.