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
                      https://maven.apache.org/xsd/settings-1.0.0.xsd">
  <localRepository>/usr/share/maven/ref/repository</localRepository>

 <servers>
    <server>
      <id>maven-snapshots</id>
      <username>admin</username>
      <password>p455w0rd</password>
    </server>
    <server>
      <id>maven-releases</id>
      <username>admin</username>
      <password>p455w0rd</password>
    </server>
  </servers>

  <mirrors>
    <mirror>
      <id>maven-central</id>
      <name>maven central</name>
      <url>http://localhost:8081/repository/maven-central/</url>
      <mirrorOf>*</mirrorOf>
    </mirror>
  </mirrors>

</settings>