+$script = <<SCRIPT
+# export http_proxy="http://proxy_host:proxy_port"
+# export https_proxy="http://proxy_host:proxy_port"
+wget https://raw.githubusercontent.com/BookStackApp/devops/master/scripts/installation-ubuntu-16.04.sh
+chmod a+x installation-ubuntu-16.04.sh
+./installation-ubuntu-16.04.sh
+echo "BookStack available by url: http://localhost:8080"
+SCRIPT
+