Use a pre-built Dockerfile

.devcontainer/Dockerfile

@@ -3,55 +3,25 @@
 # Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
 #-------------------------------------------------------------------------------------------------------------
 
-FROM node:10
+# For information on the contents of the container image below, see following Dockerfile:
+# https://github.com/microsoft/vscode-dev-containers/tree/v0.43.0/containers/javascript-node-12/.devcontainer/Dockerfile
+FROM mcr.microsoft.com/vscode/devcontainers/javascript-node:0.43-12
 
-# The node image includes a non-root user with sudo access. Use the "remoteUser"
-# property in devcontainer.json to use it. On Linux, the container user's GID/UIDs
-# will be updated to match your local UID/GID (when using the dockerFile property).
-# See https://aka.ms/vscode-remote/containers/non-root-user for details.
-ARG USERNAME=node
-ARG USER_UID=1000
-ARG USER_GID=$USER_UID
+# *************************************************************
+# * Uncomment this section to use RUN instructions to install *
+# * any needed dependencies after executing "apt-get update". *
+# * See https://docs.docker.com/engine/reference/builder/#run *
+# *************************************************************
+# ENV DEBIAN_FRONTEND=noninteractive
+# RUN apt-get update \
+#    && apt-get -y install --no-reccomends <your-package-list-here> \
+#    #
+#    # Clean up
+#    && apt-get autoremove -y \
+#    && apt-get clean -y \
+#    && rm -rf /var/lib/apt/lists/*
+# ENV DEBIAN_FRONTEND=dialog
 
-# Avoid warnings by switching to noninteractive
-ENV DEBIAN_FRONTEND=noninteractive
+# Uncomment to default to non-root user
+# USER $USER_UID
 
-# Configure apt and install packages
-RUN apt-get update \
-    && apt-get -y install --no-install-recommends apt-utils dialog 2>&1 \ 
-    #
-    # Verify git and needed tools are installed
-    && apt-get -y install git iproute2 procps \
-    #
-    # Remove outdated yarn from /opt and install via package 
-    # so it can be easily updated via apt-get upgrade yarn
-    && rm -rf /opt/yarn-* \
-    && rm -f /usr/local/bin/yarn \
-    && rm -f /usr/local/bin/yarnpkg \
-    && apt-get install -y curl apt-transport-https lsb-release \
-    && curl -sS https://dl.yarnpkg.com/$(lsb_release -is | tr '[:upper:]' '[:lower:]')/pubkey.gpg | apt-key add - 2>/dev/null \
-    && echo "deb https://dl.yarnpkg.com/$(lsb_release -is | tr '[:upper:]' '[:lower:]')/ stable main" | tee /etc/apt/sources.list.d/yarn.list \
-    && apt-get update \
-    && apt-get -y install --no-install-recommends yarn \
-    #
-    # Install eslint globally
-    && npm install -g eslint \
-    #
-    # [Optional] Update a non-root user to UID/GID if needed.
-    && if [ "$USER_GID" != "1000" ] || [ "$USER_UID" != "1000" ]; then \
-        groupmod --gid $USER_GID $USERNAME \
-        && usermod --uid $USER_UID --gid $USER_GID $USERNAME \
-        && chown -R $USER_UID:$USER_GID /home/$USERNAME; \
-    fi \
-    # [Optional] Add add sudo support for non-root user
-    && apt-get install -y sudo \
-    && echo node ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME \
-    && chmod 0440 /etc/sudoers.d/$USERNAME \
-    #
-    # Clean up
-    && apt-get autoremove -y \
-    && apt-get clean -y \
-    && rm -rf /var/lib/apt/lists/*
-
-# Switch back to dialog for any ad-hoc use of apt-get
-ENV DEBIAN_FRONTEND=dialog