.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>sonatype</id>
    <username>${env.SONATYPE_USERNAME}</username>
    <password>${env.SONATYPE_PASSWORD}</password>
  </server>
  <server>
    <id>bintray</id>
    <username>${env.BINTRAY_USER}</username>
    <password>${env.BINTRAY_KEY}</password>
  </server>
  <server>
    <id>jfrog-snapshots</id>
    <username>${env.BINTRAY_USER}</username>
    <password>${env.BINTRAY_KEY}</password>
  </server>
  <server>
    <id>github.com</id>
    <username>${env.GH_USER}</username>
    <password>${env.GH_TOKEN}</password>
  </server>
</servers>
</settings>