use local image

cannot stat /etc/netplan/01-netcfg.yaml (nextcloud#736)

update shortlink (nextcloud#722)

set static IP if DHCP doesn't work (nextcloud#697)

add countdown (nextcloud#691)

No need to check netowork in the beginning

We check for repo anyway and exits if it fails

fix nextcloud#654 (nextcloud#656)

typo

prepare for removal of postgresql branch

Webmin is pure HTTPS