fixup bootstrap doc
@@ -24,11 +24,12 @@ For user in china, please use mirror of ``hub.docker.com`` to speed up image pul
::
- sudo cat > /etc/docker/daemon.json << EOF
+ cat > daemon.json << EOF
{
"registry-mirror": [ "https://registry.docker-cn.com" ]
}
EOF
+ sudo mv daemon.json /etc/docker/
**fetch CITA image**
