libraries/maven-settings.xml

<?xml version="1.0" encoding="UTF-8"?>
<settings xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd"
          xmlns="http://maven.apache.org/SETTINGS/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

    <servers>
        <server>
            <id>jetbrains-kotlin</id>
            <username>tc-kotlin</username>
            <password>${tc-kotlin.password}</password>
        </server>
        <server>
            <id>jetbrains-kotlin-github</id>
            <username>${GITHUB_LOGIN}</username>
            <password>${GITHUB_PASSWORD}</password>
        </server>
        <server>
            <id>sonatype-nexus-snapshots</id>
            <username>${kotlin.sonatype.user}</username>
            <password>${kotlin.sonatype.password}</password>
        </server>
        <server>
            <id>sonatype-nexus-staging</id>
            <username>${kotlin.sonatype.user}</username>
            <password>${kotlin.sonatype.password}</password>
        </server>
        <server>
            <id>bintray</id>
            <username>${kotlin.bintray.user}</username>
            <password>${kotlin.bintray.password}</password>
        </server>
    </servers>
</settings>