diff --git a/.classpath b/.classpath
index f0257c5..9ba41a2 100644
--- a/.classpath
+++ b/.classpath
@@ -13,7 +13,7 @@
 			<attribute name="test" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 8ad8cf1..a07d761 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,46 +1,23 @@
-# Update the VARIANT arg in devcontainer.json to pick a Java version >= 11
-ARG VARIANT=11
-FROM openjdk:${VARIANT}-jdk-buster
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.137.0/containers/java/.devcontainer/base.Dockerfile
+ARG VARIANT="14"
+FROM mcr.microsoft.com/vscode/devcontainers/java:0-${VARIANT}
 
-# Options for setup script
-ARG INSTALL_ZSH="true"
-ARG UPGRADE_PACKAGES="false"
-ARG USERNAME=vscode
-ARG USER_UID=1000
-ARG USER_GID=$USER_UID
-
-# Install needed packages and setup non-root user. Use a separate RUN statement to add your own dependencies.
-COPY library-scripts/*.sh /tmp/library-scripts/
-RUN /bin/bash /tmp/library-scripts/common-debian.sh "${INSTALL_ZSH}" "${USERNAME}" "${USER_UID}" "${USER_GID}" "${UPGRADE_PACKAGES}" \
-    && if [ ! -d "/docker-java-home" ]; then ln -s "${JAVA_HOME}" /docker-java-home; fi \
-    && apt-get clean -y && rm -rf /var/lib/apt/lists/* /tmp/library-scripts/common-debian.sh
-
-# [Optional] Install Maven
+# [Optional] Install Maven or Gradle
 ARG INSTALL_MAVEN="false"
 ARG MAVEN_VERSION=3.6.3
-ARG MAVEN_DOWNLOAD_SHA="no-check"
-ENV MAVEN_HOME=/usr/local/share/maven
-RUN if [ "${INSTALL_MAVEN}" = "true" ]; then /bin/bash /tmp/library-scripts/maven-debian.sh ${MAVEN_VERSION} ${MAVEN_HOME} ${USERNAME} ${MAVEN_DOWNLOAD_SHA}; fi \
-    && rm -f /tmp/library-scripts/maven-debian.sh
-
-# [Optional] Install Gradle
 ARG INSTALL_GRADLE="false"
 ARG GRADLE_VERSION=5.4.1
-ARG GRADLE_DOWNLOAD_SHA="no-check"
-ENV GRADLE_HOME=/usr/local/share/gradle
-RUN if [ "${INSTALL_GRADLE}" = "true" ]; then /bin/bash /tmp/library-scripts/gradle-debian.sh ${GRADLE_VERSION} ${GRADLE_HOME} ${USERNAME} ${GRADLE_DOWNLOAD_SHA}; fi \
-    && rm -f /tmp/library-scripts/gradle-debian.sh
+RUN if [ "${INSTALL_MAVEN}" = "true" ]; then su vscode -c "source /usr/local/sdkman/bin/sdkman-init.sh && sdk install maven \"${MAVEN_VERSION}\""; fi \
+    && if [ "${INSTALL_GRADLE}" = "true" ]; then su vscode -c "source /usr/local/sdkman/bin/sdkman-init.sh && sdk install gradle \"${GRADLE_VERSION}\""; fi
 
-# [Optional] Install Node.js for use with web applications - update the INSTALL_NODE arg in devcontainer.json to enable.
-ARG INSTALL_NODE="false"
+# [Optional] Install a version of Node.js using nvm for front end dev
+ARG INSTALL_NODE="true"
 ARG NODE_VERSION="lts/*"
-ENV NVM_DIR=/usr/local/share/nvm
-ENV NVM_SYMLINK_CURRENT=true \
-    PATH=${NVM_DIR}/current/bin:${PATH}
-COPY library-scripts/node-debian.sh /tmp/library-scripts/
-RUN if [ "$INSTALL_NODE" = "true" ]; then /bin/bash /tmp/library-scripts/node-debian.sh "${NVM_DIR}" "${NODE_VERSION}" "${USERNAME}"; fi \
-    && apt-get clean -y && rm -rf /var/lib/apt/lists/* /tmp/library-scripts/node-debian.sh
+RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "source /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 \
 #     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+# [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
\ No newline at end of file
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 56b5429..3e7700c 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -1,17 +1,15 @@
 // For format details, see https://aka.ms/vscode-remote/devcontainer.json or this file's README at:
-// https://github.com/microsoft/vscode-dev-containers/tree/v0.134.0/containers/java
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.137.0/containers/java
 {
 	"name": "Java",
 	"build": {
 		"dockerfile": "Dockerfile",
 		"args": {
-			// Update the VARIANT arg to pick a Java version >= 11
+			// Update the VARIANT arg to pick a Java version: 11, 14
 			"VARIANT": "11",
-			// Options to install Maven or Gradle
+			// Options
 			"INSTALL_MAVEN": "true",
-			"MAVEN_VERSION": "3.6.3",
 			"INSTALL_GRADLE": "false",
-			"GRADLE_VERSION": "5.4.1",
 			"INSTALL_NODE": "false",
 			"NODE_VERSION": "lts/*"
 		}
@@ -20,7 +18,8 @@
 	// Set *default* container specific settings.json values on container create.
 	"settings": { 
 		"terminal.integrated.shell.linux": "/bin/bash",
-		"java.home": "/docker-java-home"
+		"java.home": "/docker-java-home",
+		"maven.executable.path": "/usr/local/sdkman/candidates/maven/current/bin/mvn"
 	},
 	
 	// Add the IDs of extensions you want installed when the container is created.
@@ -34,7 +33,6 @@
 	// Use 'postCreateCommand' to run commands after the container is created.
 	// "postCreateCommand": "java -version",
 
-	// Comment out the next line to run as root
+	// Uncomment to connect as a non-root user. See https://aka.ms/vscode-remote/containers/non-root.
 	"remoteUser": "vscode"
-
 }
diff --git a/.devcontainer/library-scripts/common-debian.sh b/.devcontainer/library-scripts/common-debian.sh
deleted file mode 100644
index e756809..0000000
--- a/.devcontainer/library-scripts/common-debian.sh
+++ /dev/null
@@ -1,171 +0,0 @@
-#!/usr/bin/env bash
-#-------------------------------------------------------------------------------------------------------------
-# Copyright (c) Microsoft Corporation. All rights reserved.
-# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
-#-------------------------------------------------------------------------------------------------------------
-
-# Syntax: ./common-debian.sh [install zsh flag] [username] [user UID] [user GID] [upgrade packages flag]
-
-INSTALL_ZSH=${1:-"true"}
-USERNAME=${2:-"vscode"}
-USER_UID=${3:-1000}
-USER_GID=${4:-1000}
-UPGRADE_PACKAGES=${5:-"true"}
-
-set -e
-
-if [ "$(id -u)" -ne 0 ]; then
-    echo -e 'Script must be run a root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
-    exit 1
-fi
-
-# Treat a user name of "none" as root
-if [ "${USERNAME}" = "none" ] || [ "${USERNAME}" = "root" ]; then
-    USERNAME=root
-    USER_UID=0
-    USER_GID=0
-fi
-
-# Load markers to see which steps have already run
-MARKER_FILE="/usr/local/etc/vscode-dev-containers/common"
-if [ -f "${MARKER_FILE}" ]; then
-    echo "Marker file found:"
-    cat "${MARKER_FILE}"
-    source "${MARKER_FILE}"
-fi
-
-# Ensure apt is in non-interactive to avoid prompts
-export DEBIAN_FRONTEND=noninteractive
-
-# Function to call apt-get if needed
-apt-get-update-if-needed()
-{
-    if [ ! -d "/var/lib/apt/lists" ] || [ "$(ls /var/lib/apt/lists/ | wc -l)" = "0" ]; then
-        echo "Running apt-get update..."
-        apt-get update
-    else
-        echo "Skipping apt-get update."
-    fi
-}
-
-# Run install apt-utils to avoid debconf warning then verify presence of other common developer tools and dependencies
-if [ "${PACKAGES_ALREADY_INSTALLED}" != "true" ]; then
-    apt-get-update-if-needed
-
-    PACKAGE_LIST="apt-utils \
-        git \
-        openssh-client \
-        less \
-        iproute2 \
-        procps \
-        curl \
-        wget \
-        unzip \
-        nano \
-        jq \
-        lsb-release \
-        ca-certificates \
-        apt-transport-https \
-        dialog \
-        gnupg2 \
-        libc6 \
-        libgcc1 \
-        libgssapi-krb5-2 \
-        libicu[0-9][0-9] \
-        liblttng-ust0 \
-        libstdc++6 \
-        zlib1g \
-        locales \
-        sudo"
-
-    # Install libssl1.1 if available
-    if [[ ! -z $(apt-cache --names-only search ^libssl1.1$) ]]; then
-        PACKAGE_LIST="${PACKAGE_LIST}       libssl1.1"
-    fi
-    
-    # Install appropriate version of libssl1.0.x if available
-    LIBSSL=$(dpkg-query -f '${db:Status-Abbrev}\t${binary:Package}\n' -W 'libssl1\.0\.?' 2>&1 || echo '')
-    if [ "$(echo "$LIBSSL" | grep -o 'libssl1\.0\.[0-9]:' | uniq | sort | wc -l)" -eq 0 ]; then
-        if [[ ! -z $(apt-cache --names-only search ^libssl1.0.2$) ]]; then
-            # Debian 9
-            PACKAGE_LIST="${PACKAGE_LIST}       libssl1.0.2"
-        elif [[ ! -z $(apt-cache --names-only search ^libssl1.0.0$) ]]; then
-            # Ubuntu 18.04, 16.04, earlier
-            PACKAGE_LIST="${PACKAGE_LIST}       libssl1.0.0"
-        fi
-    fi
-
-    echo "Packages to verify are installed: ${PACKAGE_LIST}"
-    apt-get -y install --no-install-recommends ${PACKAGE_LIST} 2> >( grep -v 'debconf: delaying package configuration, since apt-utils is not installed' >&2 )
-        
-    PACKAGES_ALREADY_INSTALLED="true"
-fi
-
-# Get to latest versions of all packages
-if [ "${UPGRADE_PACKAGES}" = "true" ]; then
-    apt-get-update-if-needed
-    apt-get -y upgrade --no-install-recommends
-    apt-get autoremove -y
-fi
-
-# Ensure at least the en_US.UTF-8 UTF-8 locale is available.
-# Common need for both applications and things like the agnoster ZSH theme.
-if [ "${LOCALE_ALREADY_SET}" != "true" ]; then
-    echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen 
-    locale-gen
-    LOCALE_ALREADY_SET="true"
-fi
-
-# Create or update a non-root user to match UID/GID - see https://aka.ms/vscode-remote/containers/non-root-user.
-if id -u $USERNAME > /dev/null 2>&1; then
-    # User exists, update if needed
-    if [ "$USER_GID" != "$(id -G $USERNAME)" ]; then 
-        groupmod --gid $USER_GID $USERNAME 
-        usermod --gid $USER_GID $USERNAME
-    fi
-    if [ "$USER_UID" != "$(id -u $USERNAME)" ]; then 
-        usermod --uid $USER_UID $USERNAME
-    fi
-else
-    # Create user
-    groupadd --gid $USER_GID $USERNAME
-    useradd -s /bin/bash --uid $USER_UID --gid $USER_GID -m $USERNAME
-fi
-
-# Add add sudo support for non-root user
-if [ "${EXISTING_NON_ROOT_USER}" != "${USERNAME}" ]; then
-    echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME
-    chmod 0440 /etc/sudoers.d/$USERNAME
-    EXISTING_NON_ROOT_USER="${USERNAME}"
-fi
-
-# Ensure ~/.local/bin is in the PATH for root and non-root users for bash. (zsh is later)
-if [ "${DOT_LOCAL_ALREADY_ADDED}" != "true" ]; then
-    echo "export PATH=\$PATH:\$HOME/.local/bin" | tee -a /root/.bashrc >> /home/$USERNAME/.bashrc 
-    chown $USER_UID:$USER_GID /home/$USERNAME/.bashrc
-    DOT_LOCAL_ALREADY_ADDED="true"
-fi
-
-# Optionally install and configure zsh
-if [ "${INSTALL_ZSH}" = "true" ] && [ ! -d "/root/.oh-my-zsh" ] && [ "${ZSH_ALREADY_INSTALLED}" != "true" ]; then
-    apt-get-update-if-needed
-    apt-get install -y zsh
-    curl -fsSLo- https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh | bash 2>&1
-    echo "export PATH=\$PATH:\$HOME/.local/bin" >> /root/.zshrc
-    if [ "${USERNAME}" != "root" ]; then
-        cp -fR /root/.oh-my-zsh /home/$USERNAME
-        cp -f /root/.zshrc /home/$USERNAME
-        sed -i -e "s/\/root\/.oh-my-zsh/\/home\/$USERNAME\/.oh-my-zsh/g" /home/$USERNAME/.zshrc
-        chown -R $USER_UID:$USER_GID /home/$USERNAME/.oh-my-zsh /home/$USERNAME/.zshrc
-    fi
-    ZSH_ALREADY_INSTALLED="true"
-fi
-
-# Write marker file
-mkdir -p "$(dirname "${MARKER_FILE}")"
-echo -e "\
-    PACKAGES_ALREADY_INSTALLED=${PACKAGES_ALREADY_INSTALLED}\n\
-    LOCALE_ALREADY_SET=${LOCALE_ALREADY_SET}\n\
-    EXISTING_NON_ROOT_USER=${EXISTING_NON_ROOT_USER}\n\
-    DOT_LOCAL_ALREADY_ADDED=${DOT_LOCAL_ALREADY_ADDED}\n\
-    ZSH_ALREADY_INSTALLED=${ZSH_ALREADY_INSTALLED}" > "${MARKER_FILE}"
diff --git a/.devcontainer/library-scripts/gradle-debian.sh b/.devcontainer/library-scripts/gradle-debian.sh
deleted file mode 100644
index a477fcd..0000000
--- a/.devcontainer/library-scripts/gradle-debian.sh
+++ /dev/null
@@ -1,70 +0,0 @@
-#!/usr/bin/env bash
-#-------------------------------------------------------------------------------------------------------------
-# Copyright (c) Microsoft Corporation. All rights reserved.
-# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
-#-------------------------------------------------------------------------------------------------------------
-
-# Syntax: ./gradle-debian.sh <gradle version> [gradle home] [non-root-user] [gradle SHA 256]
-
-GRADLE_VERSION=$1
-GRADLE_HOME=${2:-"/usr/local/share/gradle"}
-USERNAME=${3:-"vscode"}
-GRADLE_DOWNLOAD_SHA=${4:-"no-check"}
-
-set -e
-
-if [ -d "${GRADLE_HOME}" ]; then
-    echo "Gradle already installed."
-    exit 0
-fi
-
-if [ -z "$1" ]; then
-    echo -e "Required argument missing.\n\ngradle-debian.sh <gradle version> [gradle home] [non-root-user] [gradle SHA 256]"
-    exit 1
-fi
-
-if [ "$(id -u)" -ne 0 ]; then
-    echo -e 'Script must be run a root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
-    exit 1
-fi
-
-# Treat a user name of "none" or non-existant user as root
-if [ "${USERNAME}" = "none" ] && ! id -u ${USERNAME} > /dev/null 2>&1; then
-    USERNAME=root
-fi
-
-# Install curl, apt-get dependencies if missing
-if ! type curl > /dev/null 2>&1; then
-    export DEBIAN_FRONTEND=noninteractive
-    if [ ! -d "/var/lib/apt/lists" ] || [ "$(ls /var/lib/apt/lists/ | wc -l)" = "0" ]; then
-        apt-get update
-    fi
-    apt-get -y install --no-install-recommends ca-certificates curl gnupg2
-fi
-
-# Function to su if user exists and is not root
-suIf() {
-    if [ "${USERNAME}" != "root" ]; then
-        su ${USERNAME} -c "$@"
-    else
-        "$@"
-    fi
-}
-
-# Install Gradle
-echo "Downloading Gradle..."
-suIf "$(cat \
-<< EOF
-    mkdir -p /tmp/downloads
-    curl -sSL --output /tmp/downloads/archive-gradle.zip https://services.gradle.org/distributions/gradle-${GRADLE_VERSION}-bin.zip
-    ([ "${GRADLE_DOWNLOAD_SHA}" = "no-check" ] || echo "${GRADLE_DOWNLOAD_SHA} */tmp/downloads/archive-gradle.zip" | sha256sum --check - )
-    unzip -q /tmp/downloads/archive-gradle.zip -d /tmp/downloads/
-EOF
-)"
-mv -f /tmp/downloads/gradle* ${GRADLE_HOME}
-chown ${USERNAME}:root ${GRADLE_HOME}
-ln -s ${GRADLE_HOME}/bin/gradle /usr/local/bin/gradle
-rm -rf /tmp/downloads
-echo "Done."
-
-
diff --git a/.devcontainer/library-scripts/maven-debian.sh b/.devcontainer/library-scripts/maven-debian.sh
deleted file mode 100644
index c1ce947..0000000
--- a/.devcontainer/library-scripts/maven-debian.sh
+++ /dev/null
@@ -1,75 +0,0 @@
-#!/usr/bin/env bash
-#-------------------------------------------------------------------------------------------------------------
-# Copyright (c) Microsoft Corporation. All rights reserved.
-# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
-#-------------------------------------------------------------------------------------------------------------
-
-# Syntax: ./maven-debian.sh <maven version> [maven home]  [non-root user] [maven SHA 512]
-
-MAVEN_VERSION=$1
-MAVEN_HOME=${2:-"/usr/local/share/maven"}
-USERNAME=${3:-"vscode"}
-MAVEN_DOWNLOAD_SHA=${4:-"no-check"}
-
-set -e
-
-if [ -d "${MAVEN_HOME}" ]; then
-    echo "Maven already installed."
-    exit 0
-fi
-
-if [ -z "$1" ]; then
-    echo -e "Required argument missing.\n\nmaven-debian.sh <maven version> [maven home]  [non-root user] [maven SHA 512]"
-    exit 1
-fi
-
-if [ "$(id -u)" -ne 0 ]; then
-    echo -e 'Script must be run a root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
-    exit 1
-fi
-
-# Treat a user name of "none" or non-existant user as root
-if [ "${USERNAME}" = "none" ] && ! id -u ${USERNAME} > /dev/null 2>&1; then
-    USERNAME=root
-fi
-
-# Install curl, apt-get dependencies if missing
-if ! type curl > /dev/null 2>&1; then
-    export DEBIAN_FRONTEND=noninteractive
-    if [ ! -d "/var/lib/apt/lists" ] || [ "$(ls /var/lib/apt/lists/ | wc -l)" = "0" ]; then
-        apt-get update
-    fi
-    apt-get -y install --no-install-recommends ca-certificates curl gnupg2
-fi
-
-# Function to su if user exists and is not root
-suIf() {
-    if [ "${USERNAME}" != "root" ]; then
-        su ${USERNAME} -c "$@"
-    else
-        "$@"
-    fi
-}
-
-# Creat folder, add maven settings
-mkdir -p ${MAVEN_HOME} ${MAVEN_HOME}/ref
-tee ${MAVEN_HOME}/ref/maven-settings.xml > /dev/null \
-<< EOF 
-<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 https://maven.apache.org/xsd/settings-1.0.0.xsd">
-    <localRepository>${MAVEN_HOME}/ref/repository</localRepository>
-</settings>
-EOF
-chown -R ${USERNAME}:root ${MAVEN_HOME}
-
-# Install Maven
-echo "Downloading Maven..."
-suIf "$(cat \
-<< EOF
-    curl -fsSL -o /tmp/maven.tar.gz https://archive.apache.org/dist/maven/maven-3/${MAVEN_VERSION}/binaries/apache-maven-${MAVEN_VERSION}-bin.tar.gz
-    ([ "${MAVEN_DOWNLOAD_SHA}" = "dev-mode" ] || echo "${MAVEN_DOWNLOAD_SHA} */tmp/maven.tar.gz" | sha512sum -c - )
-    tar -xzf /tmp/maven.tar.gz -C ${MAVEN_HOME} --strip-components=1
-    rm -f /tmp/maven.tar.gz
-EOF
-)"
-ln -s ${MAVEN_HOME}/bin/mvn /usr/local/bin/mvn
-echo "Done."
diff --git a/.devcontainer/library-scripts/node-debian.sh b/.devcontainer/library-scripts/node-debian.sh
deleted file mode 100644
index a6c4e59..0000000
--- a/.devcontainer/library-scripts/node-debian.sh
+++ /dev/null
@@ -1,102 +0,0 @@
-#!/bin/bash
-#-------------------------------------------------------------------------------------------------------------
-# Copyright (c) Microsoft Corporation. All rights reserved.
-# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
-#-------------------------------------------------------------------------------------------------------------
-
-# Syntax: ./node-debian.sh <directory to install nvm> <node version to install (use "none" to skip)> <non-root user>
-
-export NVM_DIR=${1:-"/usr/local/share/nvm"}
-export NODE_VERSION=${2:-"lts/*"}
-USERNAME=${3:-"vscode"}
-
-set -e
-
-if [ "$(id -u)" -ne 0 ]; then
-    echo -e 'Script must be run a root. Use sudo, su, or add "USER root" to\nyour Dockerfile before running this script.'
-    exit 1
-fi
-
-# Ensure apt is in non-interactive to avoid prompts
-export DEBIAN_FRONTEND=noninteractive
-
-# Install curl, apt-get dependencies if missing
-if ! type curl > /dev/null 2>&1; then
-    if [ ! -d "/var/lib/apt/lists" ] || [ "$(ls /var/lib/apt/lists/ | wc -l)" = "0" ]; then
-        apt-get update
-    fi
-    apt-get -y install --no-install-recommends apt-transport-https ca-certificates curl gnupg2
-fi
-
-# Treat a user name of "none" as root
-if [ "${USERNAME}" = "none" ]; then
-    USERNAME=root
-fi
-
-if [ "${NODE_VERSION}" = "none" ]; then
-    export NODE_VERSION=
-fi
-
-# Install yarn
-if type yarn > /dev/null 2>&1; then
-    echo "Yarn already installed."
-else
-    curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - 2>/dev/null
-    echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
-    apt-get update
-    apt-get -y install --no-install-recommends yarn
-fi
-
-# Install the specified node version if NVM directory already exists, then exit
-if [ -d "${NVM_DIR}" ]; then
-    echo "NVM already installed."
-    if [ "${NODE_VERSION}" != "" ]; then
-       suIf "nvm install ${NODE_VERSION}"
-    fi
-    exit 0
-fi
-
-mkdir -p ${NVM_DIR}
-
-# Set up non-root user if applicable
-if [ "${USERNAME}" != "root" ] && id -u $USERNAME > /dev/null 2>&1; then
-    tee -a /home/${USERNAME}/.bashrc /home/${USERNAME}/.zshrc >> /root/.zshrc \
-<< EOF
-EOF
-    
-    # Add NVM init and add code to update NVM ownership if UID/GID changes
-    tee -a /root/.bashrc /root/.zshrc /home/${USERNAME}/.bashrc >> /home/${USERNAME}/.zshrc \
-<<EOF
-            export NVM_DIR="${NVM_DIR}"
-            [ -s "\$NVM_DIR/nvm.sh" ] && . "\$NVM_DIR/nvm.sh"
-            [ -s "\$NVM_DIR/bash_completion" ] && . "\$NVM_DIR/bash_completion"
-            if [ "\$(stat -c '%U' \$NVM_DIR)" != "${USERNAME}" ]; then
-                sudo chown -R ${USERNAME}:root \$NVM_DIR
-            fi
-EOF
-    
-    # Update ownership
-    chown ${USERNAME} ${NVM_DIR} /home/${USERNAME}/.bashrc /home/${USERNAME}/.zshrc
-fi
-
-# Function to su if user exists and is not root
-suIf() {
-    if [ "${USERNAME}" != "root" ] && id -u ${USERNAME} > /dev/null 2>&1; then
-        su ${USERNAME} -c "$@"
-    else
-        "$@"
-    fi
-
-}
-
-# Run NVM installer as non-root if needed
-suIf "$(cat \
-<< EOF
-        curl -so- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash 
-        if [ "${NODE_VERSION}" != "" ]; then
-            source $NVM_DIR/nvm.sh
-            nvm alias default ${NODE_VERSION}
-        fi
-EOF
-)" 2>&1
-
diff --git a/.settings/org.eclipse.jdt.core.prefs b/.settings/org.eclipse.jdt.core.prefs
index 1b6e1ef..46235dc 100644
--- a/.settings/org.eclipse.jdt.core.prefs
+++ b/.settings/org.eclipse.jdt.core.prefs
@@ -1,9 +1,9 @@
 eclipse.preferences.version=1
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
 org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
 org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore
 org.eclipse.jdt.core.compiler.processAnnotations=disabled
 org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.source=11