Added nodejs and npm for chrome extension (#164)

Install nvm, node, and npm in .sail/Dockerfile

Author: teddy-codes

.sail/Dockerfile

@@ -1,14 +1,19 @@
 FROM codercom/ubuntu-dev-go:latest
+SHELL ["/bin/bash", "-c"]
+RUN sudo apt-get update && \
+  sudo apt-get install -y htop
+RUN curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash && \
+    . ~/.nvm/nvm.sh \
+    && nvm install node
 
-RUN sudo apt-get install -y htop
 LABEL project_root "~/go/src/go.coder.com"
 
 # Modules break much of Go's tooling.
 ENV GO111MODULE=off
 
 # Install the latest version of Hugo.
 RUN wget -O /tmp/hugo.deb https://github.com/gohugoio/hugo/releases/download/v0.55.4/hugo_extended_0.55.4_Linux-64bit.deb && \
-    sudo dpkg -i /tmp/hugo.deb && \
-    rm -f /tmp/hugo.deb
+  sudo dpkg -i /tmp/hugo.deb && \
+  rm -f /tmp/hugo.deb
 
 RUN installext peterjausovec.vscode-docker