How to setup Proxy in Karate config file

I am using the following syntax in karate feature file and it works but I want to add this globally in karate config file so that I don't have to add in all of my feature file individually

* configure proxy = { uri: 'http://xx.xx.xxx.xx:8080', username: 'myuserid', password: 'xxxxxx' }

I need to know how we can add above globally in karate-config.js file

Thanks