add docker install startup script sample

Author: sanfilip

samples/docker_script.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+if [ -f /etc/firstrun ]; then
+  echo already ran
+else
+  logger installing docker
+  apt-get -y install apt-transport-https ca-certificates curl software-properties-common
+  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
+  add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
+  apt-get update
+  apt-get -y install docker-ce
+  touch /etc/firstrun
+fi
+
+docker run hello-world