Allow the adjustment to local constraints and configure the hostname as an example

.gitignore

@@ -1,5 +1,6 @@
 *.html
 *.pdf
+group_vars/*/local.config.yml
 
 # Created by https://www.toptal.com/developers/gitignore/api/vim,intellij
 # Edit at https://www.toptal.com/developers/gitignore?templates=vim,intellij

README.adoc

@@ -1,5 +1,6 @@
 = My dev-machine setup
 :source-highlighter: rouge
+:icons: font
 
 This ansible-playbook will setup my development machines and prepare them for work.
 
@@ -14,7 +15,7 @@ In both cases we need to install `ansible` and `git` though.
 sudo apt install ansible git
 ----
 
-.Prepararation on macos
+.Prepararation on Macos
 [source,bash]
 ----
 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
@@ -22,7 +23,19 @@ brew install ansible git
 ----
 
 == Setup
-The setup is simple:
+Make sure to configure the local environment:
+This is done by copying `global_vars/localhost/local.config.yml.tpl` to `global_vars/localhost/local.config.yml` and adjust it to the local conditions.
+
+[source,bash]
+----
+cp global_vars/localhost/local.config.yml.tpl global_vars/localhost/local.config.yml
+vi $_
+----
+
+[NOTE]
+We do not have installed anything yet, so we can only use the available tools of the environment.
+
+After the configuration the setup is very simple:
 
 [source,bash]
 ----

group_vars/localhost/local.config.yml.tpl

@@ -0,0 +1,3 @@
+# The hostname can be defined already, e.g. in a company setup, so please enter the expected hostname.
+hostname: 
+

roles/debian/tasks/main.yml

@@ -1,3 +1,8 @@
+- name: Ensure correct hostname
+  hostname:
+    name: "{{ hostname }}"
+    use: systemd
+
 - name: Ensure tools to add additional apt sources
   tags: [repos]
   become: yes

roles/macos/tasks/main.yml

@@ -1,3 +1,8 @@
+- name: Ensure correct hostname
+  hostname:
+    name: "{{ hostname }}"
+    use: macos
+
 - name: "Ensure brew-packages"
   tags: [packages]
   homebrew: