embulk failing using http proxy server in linux using -J-Dhttps.proxyHost

[doctor]

Hello,
I am trying to run embulk using proxy to extract data from salesforce. And it looks like the proxy settings are not being used by embulk. Can you please take a look and advise?

I checked with embulk core... they advised this is a plugin issue.
Issue submitted to embulk core

Just a note: this config works well in my laptop. Trying to make it work in our production server

Command:
embulk -J-Dhttps.proxyHost=xx.xxx.xx.xx -J-Dhttps.proxyPort=80 preview salesforce.yml

Output:
2022-06-20 14:27:34.410 -0500: Embulk v0.9.24
2022-06-20 14:27:35.638 -0500 [WARN] (main): DEPRECATION: JRuby org.jruby.embed.ScriptingContainer is directly injected.
2022-06-20 14:27:38.113 -0500 [INFO] (main): Gem's home and path are set by default: "/home/abcd/.embulk/lib/gems"
2022-06-20 14:27:39.030 -0500 [INFO] (main): Started Embulk v0.9.24
2022-06-20 14:27:39.153 -0500 [INFO] (0001:transaction): Loaded plugin embulk-input-salesforce_bulk (0.2.3)
2022-06-20 14:27:39.190 -0500 [INFO] (0001:transaction): Using local thread executor with max_threads=2 / tasks=1
2022-06-20 14:27:39.196 -0500 [INFO] (0001:transaction): {done: 0 / 1, running: 0}
2022-06-20 14:27:39.272 -0500 [INFO] (0076:task-0000): Try login to 'https://xxxxx.my.salesforce.com/services/Soap/u/39.0'.
2022-06-20 14:27:39.867 -0500 [ERROR] (0076:task-0000): class com.sforce.ws.ConnectionException
com.sforce.ws.ConnectionException: Failed to send request to https://xxxxx.my.salesforce.com/services/Soap/u/39.0
at com.sforce.ws.transport.SoapConnection.send(SoapConnection.java:121) ~[na:na]