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README: add note on bundled keys

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@ -3,14 +3,14 @@
[Alpine Linux documentation](https://docs.alpinelinux.org/user-handbook/0.1a/Installing/setup_alpine.html) assumes **initial setup** is carried-out on a system with a keyboard & display to interract with.\ [Alpine Linux documentation](https://docs.alpinelinux.org/user-handbook/0.1a/Installing/setup_alpine.html) assumes **initial setup** is carried-out on a system with a keyboard & display to interract with.\
However, there are many cases where one might want to deploy a headless system, only available through a network connection (ethernet, wifi or as USB ethernet gadget). However, there are many cases where one might want to deploy a headless system, only available through a network connection (ethernet, wifi or as USB ethernet gadget).
This repo provides an **overlay file** to initially boot such headless system (leveraging Alpine distro's `initramfs` feature): it enables a basic ssh server to log-into from another Computer, in order to finalize system set-up. This repo provides an **overlay file** to initially boot such headless system (leveraging Alpine distro's `initramfs` feature): it enables a basic ssh server to log-into from another Computer, in order to finalize system setup.
## Install procedure: ## Install procedure:
Please follow [Alpine Linux Wiki](https://wiki.alpinelinux.org/wiki/Installation#Installation_Overview) to download & create installation media for the target platform.\ Please follow [Alpine Linux Wiki](https://wiki.alpinelinux.org/wiki/Installation#Installation_Overview) to download & create installation media for the target platform.\
Tools provided here can be used on any plaform for any install modes (diskless, data disk, system disk). Tools provided here can be used on any plaform for any install modes (diskless, data disk, system disk).
Just add [**headless.apkovl.tar.gz**](https://github.com/macmpi/alpine-linux-headless-bootstrap/raw/main/headless.apkovl.tar.gz) overlay file at the root of Alpine Linux boot media (or onto any custom side-media) and boot the system. Just add [**headless.apkovl.tar.gz**](https://github.com/macmpi/alpine-linux-headless-bootstrap/raw/main/headless.apkovl.tar.gz)[^1] overlay file at the root of Alpine Linux boot media (or onto any custom side-media) and boot the system.
With default network interface definitions (and SSID/pass file if using wifi), one may then access the system under `ssh` with: `ssh root@<IP>`\ With default network interface definitions (and SSID/pass file if using wifi), one may then access the system under `ssh` with: `ssh root@<IP>`\
(system IP address may be determined with any IP scanning tools such as `nmap`). (system IP address may be determined with any IP scanning tools such as `nmap`).
@ -32,6 +32,8 @@ With Computer set-up to share networking with USB interface as 10.42.0.1 gateway
Main execution steps are logged in `/var/log/messages`. Main execution steps are logged in `/var/log/messages`.
[^1]: About bundled ssh keys: as this package is essentially intended to **quickly bootstrap** system in order to configure it, it purposely embeds [some ssh keys](https://github.com/macmpi/alpine-linux-headless-bootstrap/tree/main/overlay/etc/ssh) so that bootstrapping is as fast as possible. Those (temporary) keys are moved in /tmp, so they will **not be saved/reused** once permanent configuration is set (with or without ssh server voluntarily installed in permanent setup).
## How to customize further ? ## How to customize further ?
This repository may be forked/cloned/downloaded.\ This repository may be forked/cloned/downloaded.\