> For the complete documentation index, see [llms.txt](https://docs.stackos.io/stackos-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.stackos.io/stackos-docs/faqs/introductory-faqs.md).

# Introductory FAQs

### What is a Docker Image?

A Docker Image is like a game cartridge for servers.  When you "insert the cartridge" into a game system, you know the system will run the exact software you have prepared.

### Why Do Admins Prefer Docker?

The "Docker Style" style of running systems is rapidly being adopted because a tested system does not change across deploys.

Previous methods of setting up a system from scratch often introduced "setup variance" which caused the same software to run differently, leading to higher debugging costs.

### I don't know Docker, can you help?

Yes, StackAI is happy to help your project onboard to Docker and StackAI.  Please reach out to us on telegram.

### What is the StackAI App Store?

Apps in the StackAI AppStore are "quick launch" docker containers that allow users to run software with less configuration.

These address common needs.  

### I don't see X in the App Store, can it run?

Probably.  StackAI can run any docker image, so if you see it on hub.docker.com you can probably run it on StackAI

### How about custom docker images?

Yes, simply place your image on hub.docker.com and it will be available to run.

### Why do I want StackAI to handle Kubernetes?

Typical startups avoid Kubernetes because 1) it is a layer of complexity they may not fully understand and 2) is not the core deliverable to the end-user.

Furthermore, for smaller startups, once their sys-admins learn Kubernetes, they often depart for higher paying jobs in other companies.  

As a result, Docker infrastructure can often be left "brittle" and without failover, and in the worst cases without an admin until a suitable skilled replacement can be found.

With StackAI, running on a reliable Kubernetes platform is no harder than running basic Docker images.  

### How can I talk to someone real?

Join our Discord and ask your questions in the #dev-support channel.