This bicep deploys simply one VM whose Admin Password is stored in Azure Key Vault.
Open this repository in Visual Studio Code. Then right-click on main-kvincluded.bicep or getStart.bicep and select [Deploy Bicep File].
The difference between these bicep files is just place where Azure Key Vault is created. Out put is completely same. Just for PoC process.
If you deploy this bicep file with Azure CLI/PowerShell, it causes validation error. I'm not sure about this reason but all I can say is bicep is based on the thought like that. This theme is discussed as issue #10562.