{% assign apt-add_domain = include.domain | default: site.apt.domain %}
{% assign apt-add_dist = include.distribution | default: "`lsb_release -cs`" %}
{% highlight bash %}
$ sudo apt-add-repository -y 'deb [arch=amd64] https://{{ apt-add_domain }}/{{ include.repo }} {{ apt-add_dist }} {{ include.components }}' {% if include.update == true %}
$ sudo apt-get update{% endif %}
{% endhighlight %}