docs: add lost steps in bootstrap

add variant to upload image

Signed-off-by: PRIHLOP <ilya.prihlop@gmail.com>

website/content/v1.8/talos-guides/install/cloud-platforms/hetzner.md

@@ -10,10 +10,11 @@ aliases:
 Hetzner Cloud does not support uploading custom images.
 You can email their support to get a Talos ISO uploaded by following [issues:3599](https://github.com/siderolabs/talos/issues/3599#issuecomment-841172018) or you can prepare image snapshot by yourself.
 
-There are two options to upload your own.
+There are three options to upload your own.
 
 1. Run an instance in rescue mode and replace the system OS with the Talos image
 2. Use [Hashicorp packer](https://www.packer.io/docs/builders/hetzner-cloud) to prepare an image
+3. Use special utility [hcloud-upload-image] (https://github.com/apricote/hcloud-upload-image/)
 
 ### Rescue mode
 
@@ -145,6 +146,29 @@ export IMAGE_ID=<image-id-in-packer-output>
 
 After doing this, you can find the snapshot in the console interface.
 
+### hcloud-upload-image
+
+Install process described [here](https://github.com/apricote/hcloud-upload-image/?tab=readme-ov-file#getting-started)(you can download binary or build from source, it is also possible to use Docker).
+
+For process simplification you can use this bash script:
+```bash
+#!/usr/bin/env bash
+export TALOS_IMAGE_VERSION=v1.8.4 # You can change to the current version
+export TALOS_IMAGE_ARC=amd64 # You can change to arm architecture
+export HCLOUD_SERVER_ARC=x86 # HCloud server architecture can be x86 or arm
+export PACKAGE_INSTALL_COMMAND="apt install"
+wget https://github.com/siderolabs/talos/releases/download/$TALOS_IMAGE_VERSION/metal-$TALOS_IMAGE_ARC.raw.zst
+$PACKAGE_INSTALL_COMMAND zstd xz
+unzstd --rm *.zst
+xz -T 0 *.raw
+hcloud-upload-image upload \
+      --image-path *.xz \
+      --architecture $HCLOUD_SERVER_ARC \
+      --compression xz
+```
+
+After these actions, you can find the snapshot in the console interface.
+
 ## Creating a Cluster via the CLI
 
 This section assumes you have the [hcloud console utility](https://community.hetzner.com/tutorials/howto-hcloud-cli) on your local machine.
@@ -255,6 +279,13 @@ This can be found by issuing:
 hcloud server list | grep talos-control-plane
 ```
 
+Before the bootstrap process, you need to apply controlplane config to the first node:
+```bash
+talosctl apply-config --insecure \
+    --nodes <control-plane-1-IP> \
+    --file controlplane.yaml
+```
+
 Set the `endpoints` and `nodes` for your talosconfig with:
 
 ```bash
@@ -268,6 +299,23 @@ Bootstrap `etcd` on the first control plane node with:
 talosctl --talosconfig talosconfig bootstrap
 ```
 
+After a successful bootstrap, you need to add other control plane nodes:
+```bash
+talosctl apply-config --insecure \
+    --nodes <control-plane-N-IP> \
+    --file controlplane.yaml
+```
+and worker nodes, if you require that
+```bash
+talosctl apply-config --insecure \
+    --nodes <worker-N-IP> \
+    --file worker.yaml
+```
+After a while, you should see that all the members have joined:
+```bash
+talosctl --talosconfig talosconfig -n <control-plane-1-IP> get members
+```
+
 ### Retrieve the `kubeconfig`
 
 At this point we can retrieve the admin `kubeconfig` by running: