Add automatic installation recipe autoyast profile

Related progress issue: https://progress.opensuse.org/issues/80382

contrib/ay-openqa-worker.xml

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE profile>
+<profile xmlns="http://www.suse.com/1.0/yast2ns" xmlns:config="http://www.suse.com/1.0/configns">
+    <networking>
+        <keep_install_network config:type="boolean">true</keep_install_network>
+    </networking>
+    <software>
+        <products config:type="list">
+            <product>openSUSE</product>
+        </products>
+        <packages config:type="list">
+          <package>openssh</package>
+          <package>sudo</package>
+          <package>salt-minion</package>
+        </packages>
+    </software>
+    <partitioning config:type="list">
+        <drive>
+            <initialize config:type="boolean">true</initialize>
+            <partitions config:type="list">
+                <partition>
+                    <mount>/</mount>
+                    <size>max</size>
+                    <filesystem config:type="symbol">btrfs</filesystem>
+                </partition>
+                <partition>
+                    <mount>swap</mount>
+                    <size>auto</size>
+                </partition>
+            </partitions>
+        </drive>
+    </partitioning>
+  <scripts>
+    <post-scripts config:type="list">
+      <script>
+        <filename>setup.sh</filename>
+        <interpreter>shell</interpreter>
+        <debug config:type="boolean">true</debug>
+        <source><![CDATA[
+            zypper in salt-minion
+            echo 'roles: worker' > /etc/salt/grains
+            systemctl enable --now sshd salt-minion
+        ]]></source>
+      </script>
+    </post-scripts>
+  </scripts>
+  <firewall>
+    <enable_firewall config:type="boolean">true</enable_firewall>
+    <start_firewall config:type="boolean">true</start_firewall>
+    <FW_CONFIGURATIONS_EXT>sshd</FW_CONFIGURATIONS_EXT>
+  </firewall>
+  <timezone>
+    <hwclock>UTC</hwclock>
+    <timezone>Europe/Berlin</timezone>
+  </timezone>
+</profile>

docs/Installing.asciidoc

@@ -1088,6 +1088,20 @@ the workers create their own instance directories.
 * When enabling the worker cache parts of the usual "share directory" are located in the specified cache
   directory on the worker host.
 
+== Automatic installation of the operating systems for openQA machines
+[id="auto_installation_machines"]
+
+As a maintainer of an openQA infrastructure running multiple openQA worker
+machines one likely wants to use installation recipes for automatic
+installations to provide a consistent and easy setup of new machines.
+
+For this https://doc.opensuse.org/projects/autoyast/[AutoYaST] can be used. An
+example template that provides the bare basics of installing a machine with
+SSH and salt, e.g. to be used with
+https://github.com/os-autoinst/salt-states-openqa/, can be found in
+https://github.com/os-autoinst/openQA/blob/master/contrib/ay-openqa-worker.xml
+
+
 == Troubleshooting
 [id="troubleshooting"]