diff --git a/cn/lib/dev-mirror.sh b/cn/lib/dev-mirror.sh
index 0c0a3399..f15889fc 100644
--- a/cn/lib/dev-mirror.sh
+++ b/cn/lib/dev-mirror.sh
@@ -104,6 +104,7 @@ cn_dm_get_docker() {
 cn_dm_set_docker() {
   local url="$1" current="{}"
 
+  sudo mkdir -p /etc/docker
   if sudo test -f /etc/docker/daemon.json; then
     current=$(sudo cat /etc/docker/daemon.json)
   fi