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 56 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Lint
passed lint_shell #40630
debian-packaging

00:00:28

 
  Build
passed build #40631
debian-packaging

00:00:34

 
  Test
passed test #40632
ubuntu regular

00:06:53