Update Node to 16, npm to 8.4.1

Dockerfile

@@ -152,13 +152,13 @@ RUN cd ..
 #
 # Added to build the HTML5 client
 RUN curl -s https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add -
-RUN echo 'deb https://deb.nodesource.com/node_14.x bionic main' > /etc/apt/sources.list.d/nodesource.list
-RUN echo 'deb-src https://deb.nodesource.com/node_14.x bionic main' >> /etc/apt/sources.list.d/nodesource.list
+RUN echo 'deb https://deb.nodesource.com/node_16.x bionic main' > /etc/apt/sources.list.d/nodesource.list
+RUN echo 'deb-src https://deb.nodesource.com/node_16.x bionic main' >> /etc/apt/sources.list.d/nodesource.list
 RUN apt-get update && apt-get install -y nodejs 
 
 
 RUN curl https://install.meteor.com/?release=2.5 | sh
-RUN npm install npm@6.14.15 -g
+RUN npm install npm@8.4.1 -g
 
 RUN apt-get install -y software-properties-common jq moreutils