Can't install GeoNetwork, proxy problem

Hi everyone,

I'm trying to install the last version of GeoNetwork, but it fails. The problem is probably because of the proxy, so I want to know if I set it up correctly.

What I've done :

Download the last version of GeoNetwork (4.2.5 SNAPSHOT if I do no mistake)
Download Maven 3.9.2, and put it in the path ([...] is for the root) : export PATH=$PATH:[...]/apache-maven-3.9.2/bin
Create a settings_tests.xml inside the GeoNetwork project
Set it like this :
```
<?xml version="1.0" encoding="UTF-8"?>
```

my_proxy true http proxy.mine.fr XXXX

6. Set MAVEN_OPTS : `export MAVEN_OPTS="-Dhttp.proxyHost=proxy.mine.fr -Dhttp.proxyPort=XXXX"`
7. Do the install from inside core-geonetwork : `mvn -s settings_tests.xml install`

Here is the failure I have :

[INFO] Reactor Summary for GeoNetwork opensource 4.2.5-SNAPSHOT: [INFO] [INFO] GeoNetwork opensource .............................. FAILURE [ 30.486 s] [INFO] GeoNetwork common utils ............................ SKIPPED [INFO] Caching xslt module ................................ SKIPPED [INFO] ArcSDE module (dummy-api) .......................... SKIPPED [INFO] GeoNetwork domain .................................. SKIPPED [INFO] Oaipmh modules ..................................... SKIPPED [INFO] GeoNetwork Events .................................. SKIPPED [INFO] GeoNetwork schema plugins .......................... SKIPPED [INFO] GeoNetwork schema plugins core ..................... SKIPPED [INFO] GeoNetwork schema plugin for ISO19139/119 standards SKIPPED [INFO] Index module ....................................... SKIPPED [INFO] GeoNetwork core .................................... SKIPPED [INFO] GeoNetwork Events .................................. SKIPPED [INFO] GeoNetwork schema plugin for Dublin Core records retrieved by CSW SKIPPED [INFO] GeoNetwork schema plugin for Dublin Core standard .. SKIPPED [INFO] GeoNetwork schema plugin for ISO19110 standard ..... SKIPPED [INFO] GeoNetwork schema plugin for ISO19115-3:2018 standard SKIPPED [INFO] GeoNetwork CSW server .............................. SKIPPED [INFO] GeoNetwork harvesters .............................. SKIPPED [INFO] GeoNetwork health monitor .......................... SKIPPED [INFO] GeoNetwork Digital Object Identifier (DOI) client .. SKIPPED [INFO] GeoNetwork services ................................ SKIPPED [INFO] Geonetwork Web Resources 4 Java .................... SKIPPED [INFO] GeoNetwork INSPIRE Atom ............................ SKIPPED [INFO] GeoNetwork index using Elasticsearch ............... SKIPPED [INFO] GeoNetwork dashboard app based on Kibana ........... SKIPPED [INFO] Release module ..................................... SKIPPED [INFO] gn-messaging ....................................... SKIPPED [INFO] gn-workers ......................................... SKIPPED [INFO] WFS features harvester ............................. SKIPPED [INFO] gn-camelPeriodicProducer ........................... SKIPPED [INFO] gn-es-test ......................................... SKIPPED [INFO] GeoNetwork Slave ................................... SKIPPED [INFO] Tests for schema plugins ........................... SKIPPED [INFO] GeoNetwork user interface module ................... SKIPPED [INFO] GeoNetwork Web module .............................. SKIPPED [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 30.874 s [INFO] Finished at: 2023-06-13T08:36:08+02:00 [INFO] ------------------------------------------------------------------------ [ERROR] Plugin org.codehaus.mojo:build-helper-maven-plugin:3.0.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.codehaus.mojo:build-helper-maven-plugin:jar:3.0.0: The following artifacts could not be resolved: org.codehaus.mojo:build-helper-maven-plugin:pom:3.0.0 (absent): Could not transfer artifact org.codehaus.mojo:build-helper-maven-plugin:pom:3.0.0 from/to oss.sonatype.org-github-releases (https://oss.sonatype.org/content/repositories/github-releases): Connect to my.proxy.fr:XXXX[my.proxy.fr/XXX.XXX.XXX.X] failed: connect timed out -> [Help 1]


Here is my setup :
 - Debian 10, virtual machine
 - GeoNetwork Version 4.2.5-SNAPSHOT
 - Java JDK 1.8

I've tried many alternatives :
- Without proxy, it also fails but it gives a different error :

Plugin org.codehaus.mojo:build-helper-maven-plugin:3.0.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.codehaus.mojo:build-helper-maven-plugin:jar:3.0.0: The following artifacts could not be resolved: org.codehaus.mojo:build-helper-maven-plugin:pom:3.0.0 (absent): Could not transfer artifact org.codehaus.mojo:build-helper-maven-plugin:pom:3.0.0 from/to oss.sonatype.org-github-releases (https://oss.sonatype.org/content/repositories/github-releases): oss.sonatype.org: Échec temporaire dans la résolution du nom: Unknown host oss.sonatype.org: Échec temporaire dans la résolution du nom -> [Help 1]

- With the proxy set only inside settings_tests.xml
- With the proxy set only inside MAVEN_OPTS
- With https (and the two alternatives right above)
- With the settings.xml inside .m2, but it gives the same problem

Finally, I tried this command : `mvn help:effective-settings`, and it gives a warning for each download, and it doesn't download it. Here is an example, but keep in mind that it does this for every plugin :

[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-compiler-plugin:3.8.1: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.8.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-compiler-plugin:jar:3.8.1



I think that it might comes from our proxy.
Do I set it correctly ? Or should I see with the proxy directly ?

Thank you all for your time !

geonetwork / core-geonetwork

Can't install GeoNetwork, proxy problem #7154