How do I bulid this thing without internet?

[SimonGhost]

Maven told me :
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------< exhibitor:exhibitor >-------------------------
[INFO] Building exhibitor 1.6.0
[INFO] --------------------------------[ jar ]---------------------------------
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.5/maven-clean-plugin-2.5.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.865 s
[INFO] Finished at: 2019-03-12T12:15:45+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.5: Could not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.5 from/to central (https://repo.maven.apache.org/maven2): repo.maven.apache.org: Name or service not known: Unknown host repo.maven.apache.org: Name or service not known -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException
My servers do not in the internet.thx.

[xiaochuanyu]

Internet is required to build exhibitor because it pulls dependencies from Maven repo.