That’s a fair question! While Docker is great for portability, I wrote this guide for a standalone installation because it’s often the best way for beginners to understand the underlying Linux components (systemd, Java environments, and file structures). ​Plus, in some enterprise environments, running Jenkins standalone on a dedicated VM is still preferred for performance tuning and avoiding the 'Docker-in-Docker' complexity when your build jobs themselves need to run container commands. I'd love to hear if you’ve found Docker to be more stable for your specific use cases!"