update keycloak requirements

Signed-off-by: Thomas Telleis <[email protected]>

Author: sobo

docs/deploy-and-configure/installation/scenario-k8s-deployment/index.md

@@ -155,12 +155,8 @@ provided Helm chart.
 
 ### 1. Obtain the chart
 
-``` console
-helm repo add --force-update eccenca https://helm.eccenca.com
-helm repo update eccenca
-```
+We strongly recommend to download the chart and execute the install commands against a local environment.
 
-You can also download the latest version here:
 
 ``` console
 wget https://helm.eccenca.com/keycloak/latest.tgz
@@ -172,6 +168,14 @@ tar -xzf latest.tgz
 git clone ssh://[email protected]:8101/devops/keycloak-helm.git
 ```
 
+You can also use the helm package manger, but then you have to take care about restoring from a backup on your own.
+The mechanism for that is included in the chart, but the helm command requires you have the sql dump file on your local machine.
+
+``` console
+helm repo add --force-update eccenca https://helm.eccenca.com
+helm repo update eccenca
+```
+
 ### 2. Configuration
 
 Create a file named `keycloak-values.yaml` to configure your Keycloak deployment.