By default, an evaluation version of Windows will be installed, but if you have a product key you can add a `KEY` variable like this (before installation):
```yaml
environment:
KEY:"xxxxx-xxxxx-xxxxx-xxxxx-xxxxx"
```
### How do I select the edition?
Windows Server offers a minimalistic Core edition without a GUI. To select those non-standard editions, you can add a `EDITION` variable like this (before installation):
