For docker you don't really need armbian-config to install. Just do
code {
font-family: Consolas,"courier new";
color: crimson;
background-color: rgba(0, 0, 0, 0.2);
padding: 2px;
font-size: 105%;
}
apt install docker.io and
code {
font-family: Consolas,"courier new";
color: crimson;
background-color: rgba(0, 0, 0, 0.2);
padding: 2px;
font-size: 105%;
}
usermod -aG docker yourusername (if you want as non-root have access to docker). That's it.
OPi PC2 is armhf, so 32-bit while it seems that homeassistant requires arm64, so 64bit system. Therefore this won't work.