Add stack config option.
Add stack config option.

befairyliu/github,MalachiTatum/github,joshsoftware/github,durai145/github,piotrmurach/github,peter-murach/github,anabhilash619/github,cocktail-io/github,yaoxiaoyong/github,wicky-info/github,samphilipd/github,davengeo/github,firstval/github