Maintenance

$ sudo apt install --reinstall PKG_NAME

$ sudo dpkg --configure -a

$ dokku maintenance:custom-page APP < my-custom-page.tar

$ dokku maintenance:on APP
$ dokku maintenance:off APP

$ dokku cleanup

# List workers
$ docker exec -it gitlab-runner docker-machine ls

# Logs
$ docker logs gitlab-runner -f --tail 50

$ echo "shutdown -r now" | sudo at 23:59
warning: commands will be executed using /bin/sh
job 1 at Fri Nov 30 23:59:00 2018

$ sudo at -l
1 Fri Nov 30 23:59:00 2018 a root

pv /path/to/file.img |sudo dd bs=1m of=/dev/rdiskX