Fixed bad conditional, fixed nvm install for lts (#988)

Updated nvm commands to install a specific version, or lts properly.

Co-authored-by: John Pastore <[email protected]>

Author: cbbm142

containers/go/.devcontainer/Dockerfile

@@ -4,7 +4,9 @@ FROM mcr.microsoft.com/vscode/devcontainers/go:0-${VARIANT}
 
 # [Choice] Node.js version: none, lts/*, 16, 14, 12, 10
 ARG NODE_VERSION="none"
-RUN if [ "${NODE_VERSION}" = "none" ]; then su vscode -c "umask 0002 && . /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
+RUN if [ "${NODE_VERSION}" = "lts" ]; then su vscode -c "umask 0002 && . /usr/local/share/nvm/nvm.sh && nvm install --lts 2>&1"; \
+    elif [ "${NODE_VERSION}" != "none" ];  then su vscode -c "umask 0002 && . /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; \
+    fi
 
 # [Optional] Uncomment this section to install additional OS packages.
 # RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \