settings.xml

<?xml version="1.0" encoding="UTF-8" ?>
<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 Settings -->
  <servers>
    <server>
      <id>${env.SERVER_ID}</id>
      <username>${env.SERVER_USERNAME}</username>
      <password>${env.SERVER_PASSWORD}</password>
    </server>
  </servers>
  
  <!-- Default GPG Profile -->
  <profiles>
    <profile>
      <id>gpg</id>
      <activation>
        <activeByDefault>true</activeByDefault>
      </activation>
      <properties>
        <gpg.executable>gpg</gpg.executable>
        <gpg.passphrase>${env.GPG_PASSPHRASE}</gpg.passphrase>
      </properties>
    </profile>
  </profiles>

</settings>