diff --git a/mx-linux/mx-21-docker.sh b/mx-linux/mx-21-docker.sh
index e69de29..70d5e53 100644
--- a/mx-linux/mx-21-docker.sh
+++ b/mx-linux/mx-21-docker.sh
@@ -0,0 +1,13 @@
+# install docker in live-persistent env.
+sudo mkdir /live/boot-dev/Live-usb-storage/docker
+sudo ln -sf /live/boot-dev/Live-usb-storage/docker /var/lib/docker
+sudo apt update
+sudo apt install ca-certificates gnupg-agent apt-transport-https curl software-properties-common -y
+curl -fsSL https://download.docker.com/linux/debian/gpg | sudo apt-key add -
+sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable"
+sudo apt update
+sudo apt install docker-ce docker-ce-cli containerd.io
+sudo service docker start
+sudo update-rc.d docker enable
+sudo usermod -aG docker $USER
+newgrp $USER