custom.erb

<% if @port != 80 -%>
  Listen <%= @port %>
<% end -%>

<VirtualHost *:<%= @port %>>
	ServerAdmin webmaster@localhost

  DocumentRoot <%= @document_root %>
	<Directory />
		Options FollowSymLinks
		AllowOverride None
	</Directory>
  <Directory <%= @document_root %>>
		Options Indexes FollowSymLinks MultiViews
		AllowOverride None
		Order allow,deny
		allow from all
	</Directory>
</VirtualHost>