Initial extension of the air-gapped installation section

Author: noctarius

docs/deployments/air-gap/index.md

@@ -4,16 +4,25 @@ description: "Air Gap Installation: Simplyblock can be installed in an air-gappe
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-Simplyblock can be installed in an air-gapped environment. However, the necessary images must be downloaded to
-install and run the control plane, the storage nodes, and the Kubernetes CSI driver. In addition, for Kubernetes
-deployments, you want to download or clone the 
-[simplyblock helm repository](https://github.com/simplyblock-io/simplyblock-csi){:target="_blank" rel="noopener"} which contains the helm charts for
-Kubernetes-based storage and caching nodes, as well as the Kubernetes CSI driver.
+Simplyblock can be installed in an air-gapped Kubernetes environment. The recommended entry point is the
+`simplyblock-io/helm-deployer` image, which includes the required deployment tooling.
+
+This deployer image, together with all other required simplyblock images, is available from the
+[simplyblock-io organization on Quay](https://quay.io/organization/simplyblock-io){:target="_blank" rel="noopener"}.
+
+This repository contains all required images. Synchronizing this repository with your local container repository
+retrieves all required images by simplyblock to install control planes, storage planes, and the CSI driver.
+
+How the container repository is synchronized with your local container repository depends on the solution used and is
+outside the scope of this documentation. Please refer to the documentation for your local container repository for
+more information.
+
+The general installation instructions are similar to non-air-gapped installations, with the need to update the
+container download locations to point to your local container repository.
+
+## Local Container Repository
 
 For an air-gapped installation, we recommend an air-gapped container repository installation. Tools such as
 [JFrog Artifactory](https://jfrog.com/artifactory/){:target="_blank" rel="noopener"} or
 [Sonatype Nexus](https://www.sonatype.com/products/sonatype-nexus-repository){:target="_blank" rel="noopener"} help with the setup and management of
 container images in air-gapped environments.
-
-The general installation instructions are similar to non-air-gapped installations, with the need to update the
-container download locations to point to your local container repository.