updated .devcontainer environment

updated npm packages
made vue compile again

.devcontainer/Dockerfile

@@ -1,58 +1,26 @@
-#-------------------------------------------------------------------------------------------------------------
-# Copyright (c) Microsoft Corporation. All rights reserved.
-# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
-#-------------------------------------------------------------------------------------------------------------
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.177.0/containers/java/.devcontainer/base.Dockerfile
 
-FROM openjdk:11-jdk
+# [Choice] Java version: 11, 15
+ARG VARIANT="15"
+FROM mcr.microsoft.com/vscode/devcontainers/java:0-${VARIANT}
 
-# This Dockerfile adds 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=vscode
-ARG USER_UID=1000
-ARG USER_GID=$USER_UID
+# [Option] Install Maven
+ARG INSTALL_MAVEN="false"
+ARG MAVEN_VERSION=""
+# [Option] Install Gradle
+ARG INSTALL_GRADLE="false"
+ARG GRADLE_VERSION=""
+RUN if [ "${INSTALL_MAVEN}" = "true" ]; then su vscode -c "umask 0002 && . /usr/local/sdkman/bin/sdkman-init.sh && sdk install maven \"${MAVEN_VERSION}\""; fi \
+    && if [ "${INSTALL_GRADLE}" = "true" ]; then su vscode -c "umask 0002 && . /usr/local/sdkman/bin/sdkman-init.sh && sdk install gradle \"${GRADLE_VERSION}\""; fi
 
-# Options for common package install script
-ARG INSTALL_ZSH="true"
-ARG UPGRADE_PACKAGES="true"
-ARG COMMON_SCRIPT_SOURCE="https://raw.githubusercontent.com/microsoft/vscode-dev-containers/v0.128.0/script-library/common-debian.sh"
-ARG COMMON_SCRIPT_SHA="a6bfacc5c9c6c3706adc8788bf70182729767955b7a5509598ac205ce6847e1e"
+# [Option] Install Node.js
+ARG INSTALL_NODE="true"
+ARG NODE_VERSION="lts/*"
+RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "umask 0002 && . /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
 
-# Configure apt
-RUN apt-get update \
-    && export DEBIAN_FRONTEND=noninteractive \
-    #
-    # Install node and npm
-    && apt-get -y install --no-install-recommends nodejs npm 2>&1 \
-    #
-    # Verify git, common tools / libs installed, add/modify non-root user, optionally install zsh
-    && apt-get -y install --no-install-recommends curl ca-certificates 2>&1 \
-    && curl -sSL  ${COMMON_SCRIPT_SOURCE} -o /tmp/common-setup.sh \
-    && ([ "${COMMON_SCRIPT_SHA}" = "dev-mode" ] || (echo "${COMMON_SCRIPT_SHA} */tmp/common-setup.sh" | sha256sum -c -)) \
-    && /bin/bash /tmp/common-setup.sh "${INSTALL_ZSH}" "${USERNAME}" "${USER_UID}" "${USER_GID}" "${UPGRADE_PACKAGES}" \
-    && rm /tmp/common-setup.sh
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
 
-#-------------------Uncomment the following steps to install Maven CLI Tools----------------------------------
-# ARG MAVEN_VERSION=3.6.3
-# ARG MAVEN_SHA=c35a1803a6e70a126e80b2b3ae33eed961f83ed74d18fcd16909b2d44d7dada3203f1ffe726c17ef8dcca2dcaa9fca676987befeadc9b9f759967a8cb77181c0
-# RUN mkdir -p /usr/share/maven /usr/share/maven/ref \
-#     && export DEBIAN_FRONTEND=noninteractive \
-#     && curl -fsSL -o /tmp/apache-maven.tar.gz https://archive.apache.org/dist/maven/maven-3/${MAVEN_VERSION}/binaries/apache-maven-${MAVEN_VERSION}-bin.tar.gz \
-#     && echo "${MAVEN_SHA} /tmp/apache-maven.tar.gz" | sha512sum -c - \
-#     && tar -xzf /tmp/apache-maven.tar.gz -C /usr/share/maven --strip-components=1 \
-#     && rm -f /tmp/apache-maven.tar.gz \
-#     && ln -s /usr/share/maven/bin/mvn /usr/bin/mvn
-# COPY maven-settings.xml /usr/share/maven/ref/
-# ENV MAVEN_HOME /usr/share/maven
-# ENV MAVEN_CONFIG /root/.m2
-#-------------------------------------------------------------------------------------------------------------
-
-# Clean up
-RUN export DEBIAN_FRONTEND=noninteractive \
-    && apt-get autoremove -y \
-    && apt-get clean -y \
-    && rm -rf /var/lib/apt/lists/*
-
-# Allow for a consistant java home location for settings - image is changing over time
-RUN if [ ! -d "/docker-java-home" ]; then ln -s "${JAVA_HOME}" /docker-java-home; fi
+# [Optional] Uncomment this line to install global node packages.
+# RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g <your-package-here>" 2>&1