hungerzs/rancherOS: docker os @ v0.8.x

Sven Dowideit 980ee23130 import the rancherOS docs so we can write docs for the next release		8 年之前
..
install-to-disk	980ee23130 import the rancherOS docs so we can write docs for the next release	8 年之前
pxe	980ee23130 import the rancherOS docs so we can write docs for the next release	8 年之前
raspberry-pi	980ee23130 import the rancherOS docs so we can write docs for the next release	8 年之前