Recently I need to maintain a gradle script written by others. He created a Copy task, but he deleted some files inside. Every time I execute other tasks (not h

Recently I need to maintain a gradle script written by others. He created a Copy task, but he deleted some files inside. Every time I execute other tasks (not his task), those files are deleted. Finally I found that I need to create another Delete task and make a dependency to his task. I still don't understand those "doLast" thing very well.