Merge pull request #3285 from replicatedhq/laverya/specify-airgap-builder-helm-kube-rendering-behavior

document what k8s version we use to render helm charts

Author: laverya

docs/vendor/helm-packaging-airgap-bundles.mdx

@@ -12,6 +12,8 @@ This topic describes how to package and build air gap bundles for releases that
 <AirGapBundle/>
 
 When building the `.airgap` bundle for a release that contains one or more Helm charts, the Vendor Portal renders the Helm chart templates in the release using values supplied in the KOTS HelmChart custom resource [`builder`](/reference/custom-resource-helmchart-v2#builder) key.
+Each Helm chart is rendered with the minimum Kubernetes minor version that satisfies the `kubeVersion` in the root Helm chart. For example, if the chart specifies `kubeVersion: >=1.24.1`, the chart is rendered with Kubernetes 1.25.0.
+If this fails or if a `kubeVersion` was not specified in the root Helm chart, then the Vendor Portal attempts to render the chart with each minor version from Kubernetes 1.20 to the latest release.
 
 ## Configure the `builder` Key
 
@@ -73,4 +75,4 @@ Many applications have images that are included or excluded based on a given con
 
 * [builder](/reference/custom-resource-helmchart-v2#builder)
 * [Air Gap Installation with Embedded Cluster](/enterprise/installing-embedded-air-gap)
-* [Air Gap Installation in Existing Clusters with KOTS](/enterprise/installing-existing-cluster-airgapped)
+* [Air Gap Installation in Existing Clusters with KOTS](/enterprise/installing-existing-cluster-airgapped)