Stop Maven downloading plugins from private repository? - maven

Question

We have a company Nexus repository which has just a couple of private libraries but it mostly mirrors the public Maven Nexus repository.
The repository is on a private network which can only be accessed by VPN.
This is accessed using a settings.xml config like so (redacted)
User 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>
<server>
<id>FOOSNAPSHOTS</id>
<username>foo-publisher</username>
<password>12345</password>
</server>
<server>
<id>BARRELEASES</id>
<username>bar-publisher</username>
<password>12345</password>
</server>
</servers>
<mirrors>
<mirror>
<id>foo-nexus</id>
<mirrorOf>*</mirrorOf>
<url>https://foo/repository/foo-maven-group/</url>
</mirror>
<mirror>
<id>bar-nexus</id>
<mirrorOf>*</mirrorOf>
<url>https://foo/repository/bar-maven-group/</url>
</mirror>
</mirrors>
<profiles>
<profile>
<id>allow-snapshots</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<repositories>
<repository>
<id>snapshots-repo</id>
<url>https://foo/repository/hosted-foo-snapshots</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>foo-snapshots-repo</id>
<url>https://foo/repository/hosted-bar-snapshots</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
</profile>
</profiles>
</settings>
In a sample spring boot project, when trying to build a project when not connected to the VPN it fails because it cannot get plugins like the following.
[ERROR] No plugin found for prefix 'spring-boot' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (/Users/bobbytables/.m2/repository), foo-nexus (https://foo/repository/foo-maven-group/)] -> [Help 1]
This is annoying as it then requires to be on the VPN, is there a way to get Maven to download plugins from public repos?
Parent POM
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>foo.shared-maven-parent</groupId>
<artifactId>shared-maven-parent-java</artifactId>
<version>1.202211110800.52-x6937aa5.master</version>
</parent>
<groupId>foo.bar-service</groupId>
<artifactId>bar-service</artifactId>
<packaging>pom</packaging>
<version>3.0-SNAPSHOT</version>
<name>bar-service</name>
<description>Foo Bar - Bar is Foo</description>
<modules>
<module>contract</module>
<module>server</module>
</modules>
<properties>
<mcu.version>${project.version}</mcu.version>
<!-- Project's contract version -->
<mcu.project.contract.version>1.202204111324.39-x6bb54a3.master</mcu.project.contract.version>
</properties>
</project>
Service POM
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>foo.bar-service</groupId>
<artifactId>bar-service</artifactId>
<version>3.0-SNAPSHOT</version>
</parent>
<groupId>foo.bar/groupId>
<artifactId>server</artifactId>
<packaging>jar</packaging>
<name>Listing-command Server</name>
<description>Listing-command Server</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>foo.shared-maven-bom</groupId>
<artifactId>shared-maven-bom-chassis</artifactId>
<version>1.202211160925.72-xa9bdde9.master</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>foo.shared-commons.spring-boot</groupId>
<artifactId>jetty-server</artifactId>
<version>1.202211110857.90-xcb97a1c.master</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<!-- Starter for Stackdriver Trace -->
</project>
How can I specify either at project or user level that I want plugins to download from the public repository?
Thanks