sample-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">

<!-- We are defining a HTTP Proxy that Maven can use to access the internet. -->
<!-- Maven needs internet access to be able to download dependent libraries -->

  <proxies>    
    <proxy>
    <id>some-id</id>
    <active>true</active>
    <protocol>http</protocol>
    <username>PROXY_USERNAME</username>
    <password>PROXY_PASSWORD</password>
    <host>PROXY_URL</host>
    <port>PROXY_PORT</port>
    </proxy>
  </proxies>

  <!--define a profile where maven repos can be specified -->
  <!--make the profile active all the time -->
  
  <activeProfiles>
    <activeProfile>insecurecentral</activeProfile>
  </activeProfiles>
  
  <!-- specify HTTP sites instead of HTTPS (this is insecure) -->
  
  <profiles>  
    <profile>
      <id>insecurecentral</id>
      <!--Override the repository (and pluginRepository) "central" from the Maven Super POM -->
      <repositories>
        <repository>
          <id>central</id>
          <url>http://repo1.maven.org/maven2</url>
          <releases>
            <enabled>true</enabled>
          </releases>
        </repository>
      </repositories>
      <pluginRepositories>
        <pluginRepository>
          <id>central</id>
          <url>http://repo1.maven.org/maven2</url>
          <releases>
            <enabled>true</enabled>
          </releases>
        </pluginRepository>
      </pluginRepositories>
    </profile>
  </profiles>
</settings>