build.xml

<?xml version="1.0" encoding="utf-8"?>
<project name="Jenkins CSS Style" default="compile" basedir=".">
    <target name="compile" depends="compileCSS"/>
    <target name="compileCSS">
        <echo>Beginning CSS compilation process...</echo>
        <exec osfamily="windows" executable="cmd" failonerror="true">
            <arg line="/c sass jenkins-mmtdigital-style.scss:jenkins-mmtdigital-style.css --trace --style compressed"/>
        </exec>
        <exec osfamily="unix" executable="/usr/bin/sass" failonerror="true">
            <arg line="jenkins-mmtdigital-style.scss:jenkins-mmtdigital-style.css --trace --style compressed"/>
        </exec>
        <echo>CSS compilation complete.</echo>
    </target>
</project>