kernel: Note prereqs in document
Note that to use the build script you need to have some prereqs,
including a new enough golang.
Fixes:
Reported-by: Rory Savage
@@ -4,6 +4,11 @@ This document explains the steps to build a kernel recommended for use with
Kata Containers. To do this use `build-kernel.sh`, this script
automates the process to build a kernel for Kata Containers.
+## Requirements
+
+The `build-kernel.sh` script requires an installed Golang version matching the
+[component build requirements](https://github.com/kata-containers/documentation/blob/master/Developer-Guide.md#requirements-to-build-individual-components).
+
## Setup kernel source code
```bash
