Port 80 appears to already be in use

[m1raz (Цунский Никита)]

@cpradio @mitchellk
Soved by deliting apache and nginx, bu when i go to next step appears this problem

Device docker0 does not exist

Configuration file at containers/app.yml updated successfully! Device "docker0" does not exist. Cannot connect to the docker daemon - verify it is running and you have access After installing SMTP appers this. What I can do?