debian上安装OpenmediaValue 4 (Arrakis)

Install HTTPS transport for APT to prevent MITM attack while downloading keyring:

apt-get update
apt-get install --yes apt-transport-https

Add the package repositories:

cat <> /etc/apt/sources.list.d/openmediavault.list
deb https://packages.openmediavault.org/public arrakis main
# deb https://downloads.sourceforge.net/project/openmediavault/packages arrakis main
## Uncomment the following line to add software from the proposed repository.
# deb https://packages.openmediavault.org/public arrakis-proposed main
# deb https://downloads.sourceforge.net/project/openmediavault/packages arrakis-proposed main
## This software is not part of OpenMediaVault, but is offered by third-party
## developers as a service to OpenMediaVault users.
# deb https://packages.openmediavault.org/public arrakis partner
# deb https://downloads.sourceforge.net/project/openmediavault/packages arrakis partner
EOF

Install the |omv| 4 (Arrakis) package:

export LANG=C
export DEBIAN_FRONTEND=noninteractive
export APT_LISTCHANGES_FRONTEND=none
sudo apt-get update
sudo apt-get --allow-unauthenticated install openmediavault-keyring
sudo apt-get update
sudo apt-get --yes --auto-remove --show-upgraded --allow-downgrades --allow-change-held-packages --no-install-recommends --option Dpkg::Options::="--force-confdef" --option DPkg::Options::="--force-confold" install postfix openmediavault
# Initialize the system and database.
sudo omv-initsystem