Try using ANT_OPTS.

Author: tecarter94

java-components/build-request-processor/src/main/java/com/redhat/hacbs/container/build/preprocessor/AbstractPreprocessor.java

@@ -91,6 +91,7 @@ public void run() {
             export https_proxy=${http_proxy}
             export HTTP_PROXY=${http_proxy}
             export HTTPS_PROXY=${http_proxy}
+            export ANT_OPTS=-Dhttp.proxyHost=localhost -Dhttp.proxyPort=8080
             #fix this when we no longer need to run as root
             export HOME=${HOME:=/root}
             # Custom base working directory.