fix: update to node 10 LTS

- and drop Node 6 & 7

Author: curbengh

stacks/node/setup.sh

@@ -9,18 +9,18 @@ set -euo pipefail
 # Discussion, issues and change requests at:
 #   https://github.com/nodesource/distributions
 #
-# Script to install the NodeSource Node.js 4.x repo onto a
+# Script to install the NodeSource Node.js 10.x repo onto a
 # Debian or Ubuntu system.
 
 export DEBIAN_FRONTEND=noninteractive
 
-echo "Installing the NodeSource Node.js 6.x repo..."
+echo "Installing the NodeSource Node.js 10.x repo..."
 
 apt-get update
 apt-get install -qq apt-transport-https
 
-echo 'deb https://deb.nodesource.com/node_6.x jessie main' > /etc/apt/sources.list.d/nodesource.list
-echo 'deb-src https://deb.nodesource.com/node_6.x jessie main' >> /etc/apt/sources.list.d/nodesource.list
+echo 'deb https://deb.nodesource.com/node_10.x jessie main' > /etc/apt/sources.list.d/nodesource.list
+echo 'deb-src https://deb.nodesource.com/node_10.x jessie main' >> /etc/apt/sources.list.d/nodesource.list
 
 # Add nodesource's apt gpg key inline
 echo "