Update dev NodeJS

Author: michael-misshore

docker/ruby/Dockerfile

@@ -7,10 +7,11 @@ RUN apt-get update && apt-get install -y build-essential libpq-dev nodejs npm
 # Install Penthouse JS Dependencies
 RUN apt-get install -y libpangocairo-1.0-0 libx11-xcb1 libxcomposite1 libxcursor1 libxdamage1 libxi6 libxtst6 libnss3 libcups2 libxss1 libxrandr2 libgconf2-4 libasound2 libatk1.0-0 libgtk-3-0
 
+# Configure Node/NPM
 RUN npm cache clean -f
 RUN npm install -g n
-RUN n 8.9.3
-RUN ln -sf /usr/local/n/versions/node/8.9.3/bin/node /usr/bin/nodejs
+RUN n 10.15.1
+RUN ln -sf /usr/local/n/versions/node/10.15.1/bin/node /usr/bin/nodejs
 
 ENV BUNDLE_PATH /gems