settings.xml

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                      http://maven.apache.org/xsd/settings-1.0.0.xsd">
    <localRepository/>
    <interactiveMode/>
    <usePluginRegistry/>
    <offline/>
    <pluginGroups/>
    <servers>
        <server>
            <id>snapshots</id>
            <username>${MAVEN_USER}</username>
            <password>${MAVEN_PASS}</password>
        </server>
        <server>
            <id>releases</id>
            <username>${MAVEN_USER}</username>
            <password>${MAVEN_PASS}</password>
        </server>
        <server>
            <id>gpg.passphrase</id>
            <passphrase>${GPG_PASSPHRASE}</passphrase>
        </server>
    </servers>
    <mirrors/>
    <proxies/>
    <profiles/>
    <activeProfiles/>
</settings>