While Nic's answer pretty much summarizes the state of affairs, it's worth mentioning that a notable reason for this limited set of options is Bamboo's long standing lack of support for the JVM
nonProxyHosts property, so you might watch/vote/comment on the following issue accordingly:
I'm happy to announce that Bamboo 7.1 has been released and it’s overflowing with awesome new features. Top-voted issues First and foremost, a bunch of JAC top voted issues has been delivered - y...
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