fix: correct permissions for userns support
fix: correct permissions for userns support

Closes #4746

claytonbrown/dokku,dokku/dokku,dokku/dokku,dokku/dokku,claytonbrown/dokku,dokku/dokku,dokku/dokku,claytonbrown/dokku,claytonbrown/dokku,dokku/dokku,dokku/dokku,claytonbrown/dokku,claytonbrown/dokku,claytonbrown/dokku,claytonbrown/dokku,dokku/dokku