travis/maven-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">
    <servers>
        <server>
            <id>artifact-registry</id>
            <configuration>
                <httpConfiguration>
                    <get>
                        <usePreemptive>true</usePreemptive>
                    </get>
                    <head>
                        <usePreemptive>true</usePreemptive>
                    </head>
                    <put>
                        <params>
                            <property>
                                <name>http.protocol.expect-continue</name>
                                <value>false</value>
                            </property>
                        </params>
                    </put>
                </httpConfiguration>
            </configuration>
            <username>_json_key_base64</username>
            <password>${env.ARTIFACT_REGISTRY_KEY}</password>
        </server>
        <server>
            <id>ossrh</id>
            <username>${env.OSSRH_USERNAME}</username>
            <password>${env.OSSRH_PASSWORD}</password>
        </server>
        <server>
            <id>github.com</id>
            <username>${env.GITHUB_USERNAME}</username>
            <password>${env.GITHUB_TOKEN}</password>
        </server>
    </servers>
</settings>