feat: add complete Docker setup for markdown editor

Create Docker configuration files and setup commands

#VERCEL_SKIP

Co-authored-by: Anders Lehmann Pier <3219386+AndersPier@users.noreply.github.com>

Makefile

@@ -0,0 +1,54 @@
+# Makefile for Markdown Editor Docker operations
+
+.PHONY: help build run stop clean logs shell health
+
+# Default target
+help:
+	@echo "Available commands:"
+	@echo "  build     - Build the Docker image"
+	@echo "  run       - Run the application with docker-compose"
+	@echo "  run-prod  - Run with nginx reverse proxy"
+	@echo "  stop      - Stop all containers"
+	@echo "  clean     - Remove containers and images"
+	@echo "  logs      - Show application logs"
+	@echo "  shell     - Open shell in the app container"
+	@echo "  health    - Check application health"
+
+# Build the Docker image
+build:
+	docker-compose build --no-cache
+
+# Run the application (development)
+run:
+	docker-compose up -d markdown-editor
+	@echo "Application is running at http://localhost:3000"
+
+# Run with production setup (nginx + app)
+run-prod:
+	docker-compose --profile production up -d
+	@echo "Application is running at http://localhost (port 80)"
+
+# Stop all containers
+stop:
+	docker-compose down
+
+# Clean up containers and images
+clean:
+	docker-compose down --rmi all --volumes --remove-orphans
+	docker system prune -f
+
+# Show logs
+logs:
+	docker-compose logs -f markdown-editor
+
+# Open shell in the app container
+shell:
+	docker-compose exec markdown-editor sh
+
+# Check application health
+health:
+	@echo "Checking application health..."
+	@curl -f http://localhost:3000/api/health || echo "Health check failed"
+
+# Quick development cycle
+dev: stop build run logs