HassOS Architecture

Bootloader:
Barebox for devices that support EFI
U-Boot for devices that don't support EFI
Operating System:
Buildroot build system to generate Linux distributions
File Systems:
SquashFS for read-only file systems (using LZ4 compression)
ZRAM for /tmp, /var and swap (using LZ4 compression)
Container Platform:
Docker Engine for running Home Assistant components in containers
Updates:
RAUC for Over The Air (OTA) and USB updates
Security:

.
├── addon_configs -> /addon_configs
├── addons -> /addons
├── backup -> /backup
├── config -> /homeassistant
├── homeassistant -> /homeassistant
├── media -> /media
├── share -> /share
└── ssl -> /ssl

docker exec -it homeassistant bash

tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://xxxxxxx.mirror.aliyuncs.com"]
}
EOF
systemctl daemon-reload