#4 Update to node 16 and npm 8 to fix build failures

Dockerfile

@@ -17,6 +17,8 @@ RUN echo "Adding system components" && \
                 libgtk-3-0 libnspr4 libnss3 libpango-1.0-0 libpangocairo-1.0-0 libstdc++6 libx11-6 libx11-xcb1 \
                 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 \
                 libxss1 libxtst6 lsb-release wget xdg-utils && \
+    curl -fsSL https://deb.nodesource.com/setup_16.x | bash - && \
+    apt install -y nodejs && \
     curl -L -o pandoc.deb https://github.com/jgm/pandoc/releases/download/3.1.2/pandoc-3.1.2-1-amd64.deb && \
     dpkg -i pandoc.deb && \
     rm pandoc.deb