I have a folder structure that looks like this

I want to copy the folder img/ from src/ to the dist/ folder.
I use the following grunt command, using grunt-contrib-copy:
copy:{
       main : {
                files : [
                    {
                        flatten : true,
                        expand: true,
                        src: ['src/img/*'],
                        dest: 'dist/img'
                    }
                ]
            }
        }
But my folder structure ends up like this. Missing the images in the icons folder:

Basically, I want to do the linux command (when I'm located in the root of my project):
cp -r src/img dist/img
How can I do this?