Issue #4: Verify before coping

Signed-off-by: Matheus Horstmann <mch15@inf.ufpr.br>
3 jobs for 4-bug-arrumar-preinst in 7 minutes and 55 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Lint
passed lint_shell #40607
debian-packaging

00:00:24

 
  Build
passed build #40608
debian-packaging

00:00:32

 
  Test
passed test #40609
ubuntu regular

00:06:57