CopyFiles does not copy files beginning with . (dot)

I tried to setup CopyFiles copy assets/.htaccess to my build directory, to no avail. Nothing works, except renaming it at the source (assets/my.htaccess) and renaming it with the "to" clause:

This works only if there is something before the dot (xxx.htaccess):
```
    .copyFiles({
        from: './assets',
        to: '.[ext]',
        pattern: /\.htaccess$/
    })

```