Beside the usage of the images it's also possible to run Hass.io on a generic system without flashing an image.

docker-ce
bash
jq
curl
avahi-daemon
dbus

apparmor-utils
network-manager

Run as root (sudo su):

curl -sL https://raw.githubusercontent.com/home-assistant/hassio-installer/master/hassio_install.sh | bash -s

you can set these parameters by appending -- <parameter> <value> like:

curl -sL https://raw.githubusercontent.com/home-assistant/hassio-installer/master/hassio_install.sh | bash -s -- -m MY_MACHINE

• intel-nuc
• odroid-c2
• odroid-xu
• orangepi-prime
• qemuarm
• qemuarm-64
• qemux86
• qemux86-64
• raspberrypi
• raspberrypi2
• raspberrypi3
• raspberrypi3-64
• tinker

This installer will create the base homeassistant container for you, but if you delete if (docker rm or docker prune) the supervisor will not be able to re-create it for you. Hass.io is a Eco System and Container Orchastrator they don't support manual adjustments.

If you wish to still safelly use docker containers prune you might want to add the --filter flag to your command.

Example:

$ docker container prune --filter label!=homeassistant

or, for a greater peace of mind, you can add the following config to your ~/.docker/config.json:

{
  "pruneFilters": ["label!=homeassistant", "label!=hassio_supervisor", "label!=addon*"]
}