examples/microservices/demo1/resources/config/services.xml
<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
<parameters>
<!--
PARAMETERS
-->
<parameter key="APP_VERSION" type="string">1.0.0</parameter>
</parameters>
<services>
<!--
SERVICES
-->
<service id="some.dependency" class="stdClass">
<property name="version">%APP_VERSION%</property>
</service>
</services>
</container>