update website

Author: cbarbian-sap

website/content/en/docs/generators/helm.md

@@ -32,5 +32,6 @@ A few differences and restrictions arise from this:
   - for the `.Chart` builtin, only `.Chart.Name`, `.Chart.Version`, `.Chart.Type`, `.Chart.AppVersion`, `.Chart.Dependencies` are supported
   - for the `.Capabilities` builtin, only `.Capabilities.KubeVersion` and `.Capabilities.APIVersions` are supported
   - the `.Template` builtin is fully supported
-  - the `.Files` builtin is not supported at all.
-- Regarding hooks, `pre-delete` and `post-delete` hooks are not allowed; test and rollback hooks are ignored, and `pre-install`, `post-install`, `pre-upgrade`, `post-upgrade` hooks might be handled in a sligthly different way; hook weights will be handled in a compatible way; hook deletion policy `hook-failed` is not allowed, but `before-hook-creation` and `hook-succeeded` should work as expected.
+  - the `.Files` builtin is supported but does not return any of the paths reserved by Helm (such as `Chart.yaml`, `templates/` and so on)
+- Regarding hooks, `pre-delete` and `post-delete` hooks are not allowed; test and rollback hooks are ignored, and `pre-install`, `post-install`, `pre-upgrade`, `post-upgrade` hooks might be handled in a sligthly different way; hook weights will be handled in a compatible way; hook deletion policy `hook-failed` is not allowed, but `before-hook-creation` and `hook-succeeded` should work as expected.
+- The `.helmignore` file is currently not evaluated; in particular, files can be accessed through `.Files` altough they are listed in `.helmignore`.

website/content/en/docs/generators/kustomize.md

@@ -13,7 +13,9 @@ In addition, all (or selected; see below) files in the kustomization directory c
 That means, they will be considered as a common template group (where all templates are associated with each other),
 and the same template function set that is available on Helm can be used; so, all the [sprig](http://masterminds.github.io/sprig) functions, and custom functions such as `include`, `tpl`, `lookup` can be used. In addition:
 - parameterless functions `namespace` and `name` are defined, which return the corresponding arguments passed to `Generate()`
-- a function `kubernetesVersion` is available, which returns the version information of the target cluster, as a [version.Info](https://pkg.go.dev/k8s.io/apimachinery/pkg/version#Info) structure.
+- a function `kubernetesVersion` is available, which returns the version information of the target cluster, as a [version.Info](https://pkg.go.dev/k8s.io/apimachinery/pkg/version#Info) structure
+- files from the kustomization path can be retrieved using the template function `readFile`; there are auxiliary functions `existsFile` and `listFiles`,
+  the latter one expecting a pattern as supported by the [gobwas/glob](https://pkg.go.dev/github.com/gobwas/glob) library.
 
 In the generation step, first, all the go templates will be rendered, and the result of this pre-step will be passed to kustomize.