Fix the offline installation instructions for podman and k3s

containers/doc/server-kubernetes/README.md

@@ -61,6 +61,21 @@ done
 skopeo copy docker://registry.opensuse.org/systemsmanagement/uyuni/master/containers/uyuni/server:latest docker-archive:server.tar:registry.opensuse.org/systemsmanagement/uyuni/master/containers/uyuni/server:latest
 ```
 
+If using K3S's default local-path-provider, also pull the helper pod image for offline use:
+
+```
+helper_pod_image=$(grep helper-pod -A1 /var/lib/rancher/k3s/server/manifests/local-storage.yaml | grep image | sed 's/^ \+image: //')
+podman pull $helper_pod_image
+podman save --output helper_pod.tar $helper_pod_image
+```
+
+or
+
+```
+helper_pod_image=$(grep helper-pod -A1 /var/lib/rancher/k3s/server/manifests/local-storage.yaml | grep image | sed 's/^ \+image: //')
+skopeo copy docker://$(helper_pod_image) docker-archive:helper-pod.tar:$(helper_pod_image)
+```
+
 Copy the `cert-manager` and `uyuni/server` helm charts locally:
 
 ```
@@ -79,32 +94,19 @@ done
 In order to tell K3s to not pull the images, set the image pull policy needs to be set to `Never`.
 This needs to be done for both Uyuni and cert-manager helm charts.
 
-For the Uyuni helm chart, set the `pullPolicy` chart value to `Never` by passing a `--helm-uyuni-values=uyuni-values.yaml` parameter to `uyuniadm install` with the following `uyuni-values.yaml` file content:
-
-```
-pullPolicy: Never
-```
-
-For the cert-manager helm chart, create a `cert-values.yaml` file with the following content and pass `--helm-certmanager-values=values.yaml` parameter to `uyuniadm install`:
-
-```
-image:
-  pullPolicy: Never
-```
+To prevent Helm from pulling the images pass the `--image=pullPolicy=never` parameter to `uyuniadm install` or `uyuniadm migrate`.
 
 To use the downloaded helm charts instead of the default ones, pass `--helm-uyuni-chart=server-2023.9.0.tgz` and `--helm-certmanager-chart=cert-manager-v1.13.1.tgz` or add the following to the `uyuniadm` configuration file. Of course the versions in the file name need to be adjusted to what you downloaded:
 
 ```
 helm:
   uyuni:
     chart: server-2023.9.0.tgz
-    values: uyuni-values.yaml
   certmanager:
     chart: cert-manager-v1.13.1.tgz
-    values: cert-values.yaml
 ```
 
-Set the helper-pod `imagePullPolicy` to `Never` in `/var/lib/rancher/k3s/server/manifests/local-storage.yaml` using the following command:
+If using K3S's default local-path-provisioner, set the helper-pod `imagePullPolicy` to `Never` in `/var/lib/rancher/k3s/server/manifests/local-storage.yaml` using the following command:
 
 ```
 sed 's/imagePullPolicy: IfNotPresent/imagePullPolicy: Never/' -i /var/lib/rancher/k3s/server/manifests/local-storage.yaml
@@ -153,6 +155,8 @@ Transfer the resulting `server-image.tar` to the server and load it using the fo
 podman load -i server-image.tar
 ```
 
+To prevent pulling the images pass the `--image=pullPolicy=never` parameter to `uyuniadm install` or `uyuniadm migrate`.
+
 # Migrating from a regular server
 
 In order to migrate a regular Uyuni server to containers, a new machine is required: it is not possible to perform an in-place migration.