added sudo check, cleaned up comments

debian/debian-install-docker.sh

@@ -1,5 +1,11 @@
 #!/bin/bash
 
+if [ "$EUID" -ne 0 ]
+  then
+  echo "Please run as root"
+  exit
+fi
+
 if [[ ! -f /etc/apt/keyrings/docker.gpg ]]
     then
         apt-get update