如何使用watchkit app从命令行生成.ipa文件

I have a jenkins instance that does a release build using xcodebuild. I then have a script (on Jenkins) to create the .ipa file using xcrun. this worked fine for us until now. Now we have a watchkit app and the .ipa file that is created from this process is not the same as the one that is created if you do an archive build and export it from Xcode.I have a jenkins instance that does a release b