please burm this image to BPI-M7，this image default support docker
image lownload:
https://drive.google.com/drive/folders/1ijH2PoVUtHwe7fyiIpiQ7bsDZV3nx-MB
use commond:
apt install docker.io
update-alternatives --set iptables /usr/sbin/iptables-legacy
update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
iptables -t nat -L
systemctl start docker.service