Update CNC script

prepare-vms/cncsetup.sh

@@ -7,15 +7,6 @@ fi
 if id docker; then
   sudo userdel -r docker
 fi
-pip install --user awscli jinja2 pdfkit
-sudo apt-get install -y wkhtmltopdf xvfb
-tmux new-session \; send-keys "
-[ -f ~/.ssh/id_rsa ] || ssh-keygen
-
-eval \$(ssh-agent)
-ssh-add
-Xvfb :0 &
-export DISPLAY=:0
-mkdir -p ~/www
-sudo docker run -d -p 80:80 -v \$HOME/www:/usr/share/nginx/html nginx
-"
+sudo apt-get update -q
+sudo apt-get install -qy jq python-pip wkhtmltopdf xvfb
+pip install --user awscli jinja2 pdfkit pssh