I am trying to do a build using frontend-maven-plugin but every time it tries to fetch packages I fails with a 502 Bad Gateway. I saw that it is trying to reach out to npmjs hence I tried changing the registry URL to /. But still get the same error. And I do see it still trying to fetch the packages from npmjs.

Here is my current plugin configuration:

<plugin>
    <groupId>com.github.eirslett</groupId>
    <artifactId>frontend-maven-plugin</artifactId>
    <version>${eirslett.version}</version>
    <configuration>
        <yarnVersion>${yarn.version}</yarnVersion>
        <nodeVersion>${node.version}</nodeVersion>
    </configuration>
    <executions>
        <execution>
            <id>install node and yarn</id>
            <goals>
                <goal>install-node-and-yarn</goal>
            </goals>
            <phase>generate-resources</phase>
            <configuration>
                <yarnInheritsProxyConfigFromMaven>false</yarnInheritsProxyConfigFromMaven>
            </configuration>
        </execution>
        
        <execution>
            <id>yarn version</id>
            <goals>
                <goal>yarn</goal>
            </goals>
            <phase>generate-resources</phase>
            <configuration>
                <yarnInheritsProxyConfigFromMaven>false</yarnInheritsProxyConfigFromMaven>
                <arguments>--version</arguments>
            </configuration>
        </execution>

        <execution>
            <id>yarn strict false set</id>
            <goals>
                <goal>yarn</goal>
            </goals>
            <phase>generate-resources</phase>
            <configuration>
                <arguments>config set strict-ssl false</arguments>
                <environmentVariables>
                    <CYPRESS_INSTALL_BINARY>0</CYPRESS_INSTALL_BINARY>
                </environmentVariables>
            </configuration>
        </execution>

        <execution>
            <id>yarn node-gyp</id>
            <goals>
                <goal>yarn</goal>
            </goals>
            <configuration>
                <arguments>global add node-gyp --ignore-engines</arguments>
                <environmentVariables>
                    <CYPRESS_INSTALL_BINARY>0</CYPRESS_INSTALL_BINARY>
                </environmentVariables>
            </configuration>
        </execution>

        <execution>
            <id>yarn install</id>
            <goals>
                <goal>yarn</goal>
            </goals>
            <configuration>
                <arguments>install --registry=/ --ignore-engines</arguments>                
                <environmentVariables>
                    <yarnInheritsProxyConfigFromMaven>false</yarnInheritsProxyConfigFromMaven>
                    <CYPRESS_INSTALL_BINARY>0</CYPRESS_INSTALL_BINARY>
                </environmentVariables>
            </configuration>
        </execution>

        <execution>
            <id>yarn run</id>
            <goals>
                <goal>yarn</goal>
            </goals>
            <configuration>
                <yarnInheritsProxyConfigFromMaven>false</yarnInheritsProxyConfigFromMaven>
                <arguments>run ${NPM_CMD}</arguments>
            </configuration>
        </execution>
    </executions>
</plugin>

And the error I get on the yarn install ID is:

[INFO] --- frontend:1.12.0:yarn (yarn install) @ vod-webpack-master ---
[INFO] Found proxies: [http{protocol='http', host='a_corporate_proxy', port=8888, nonProxyHosts='localhost|127.0.0.1'}, https{protocol='https', host='a_corporate_proxy', port=8888, nonProxyHosts='localhost|127.0.0.1'}]
[INFO] Running 'yarn install --registry=/ --ignore-engines --https-proxy=http://a_corporate_proxy:8888 --proxy=http://a_corporate_proxy:8888' in /home/node/az-net/workspace/com.gtt.vod/26377-vod-vod-verify/vod-webpack-master
[INFO] yarn install v1.22.10
[INFO] [1/4] Resolving packages...
[INFO] warning [email protected]: Node Sass is no longer supported. Please use `sass` or `sass-embedded` instead.
[INFO] warning node-sass > node-gyp > [email protected]: request has been deprecated, see 
[INFO] [2/4] Fetching packages...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] error An unexpected error occurred: ".4.0.tgz: Request failed \"502 Bad Gateway\"".
[INFO] info If you think this is a bug, please open a bug report with the information provided in "/home/node/az-net/workspace/com.gtt.vod/26377-vod-vod-verify/vod-webpack-master/yarn-error.log".
[INFO] info Visit  for documentation about this command.
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...
[INFO] info There appears to be trouble with your network connection. Retrying...

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[INFO] [jenkins-event-spy] Generated /home/node/az-net/workspace/com.gtt.vod/26377-vod-vod-verify@tmp/withMavenefaeb475/maven-spy-20250324-143752-43416337656276213668641.log
[ERROR] Failed to execute goal com.github.eirslett:frontend-maven-plugin:1.12.0:yarn (yarn install) on project vod-webpack-master: Failed to run task: 'yarn install --registry=/ --ignore-engines --https-proxy=http://a_corporate_proxy:8888 --proxy=http://a_corporate_proxy:8888' failed. .apachemons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1) -> [Help 1]

I see that changing the registry didn't work. It is still trying to reach out to npmjs.

The version for NodeJS and Yarn are 16.14.0 and 1.22.10 respectively.

Any help would be appreciated. Thanks