Divert to locally stored maven-install-plugin - maven

Question

I tried to upload a Windows build to Nexus with the Maven Commandline:
mvn deploy:deploy-file -Durl=http://unity.apps.company.net/nexus/content/repositories/idesktopbuildimages-releases/ -DrepositoryId=idesktopbuildimages-releases -DgroupId=images.WINDOWS7X64EnterpriseSP0unattendedcapture.sources -DartifactId=install -Dversion=6.4 -Dpackaging=wim -Dfile=install.wim
And got the error:
Downloading:
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.4.1/maven-clean-plugin-2.4.1.pom
[WARNING] Failed to retrieve plugin descriptor for
org.apache.maven.plugins:maven-clean-plugin:2.4.1: Plugin
org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its
dependencies could not be resolved: Failed to read artifact descriptor
for org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
This happens because I don't have Internet access (only Intranet access).
So is there the possibility to divert to a locally stored maven-install-plugin file in my Maven Command?
PS: I tried -DpomFile but got the same output.
Solution:
Adding the Proxy settings to my settings.xml

Answer 1

If you don't have internet access, I assume you have a mirror of maven central available on your intranet. If it's the case you must configure your settings.xml to declare the mirror. So add something like that in your settings.xml file:
<mirrors>
<mirror>
<id>central-mirror</id>
<name>Local mirror of central repo</name>
<url>http://unity.apps.company.net/nexus/content/repositories/central</url>
<mirrorOf>central</mirrorOf>
</mirror>
</mirrors>
EDIT
Other thing to look at : you may need to configure some proxy settings (it seems strange that they aren't already there...)
see this

Answer 2

You have to set up your settings file to access the public group of Nexus as described in the Nexus book and ensure that your Nexus server has access to Central.
The url for the public group should be .../nexus/content/groups/public. This default group has the "Central" repository in it.
If you are using a different group like your "releases" you should ensure that the Central repository (or Maven Central in older Nexus releases) is part of the list of ordered group repositories as visible at http://books.sonatype.com/nexus-book/reference/confignx-sect-managing-groups.html#fig-group-config
Once that is set you can confirm that the Central repository is reachable by checking out the the proxy repository Central itself in the repositories view and confirm that you can access the remote repo by using the "Browse Remote" tab visible in http://books.sonatype.com/nexus-book/reference/confignx-sect-manage-repo.html#fig-repo-config
If this browsing does not work you Nexus server is most likely blocked by an internal proxy server. If that is the case you have to configure it in Administration - Server - Default HTTP Proxy Settings.