Don't run Bundler as root - Rails6 on Elastic Beanstalk

I've been trying to deploy a Rails 6 application to Elastic Beanstalk and have been stuck with this Bundle Root error for over a day. I've read through everything I can find but nothing has worked so far.

[ERROR] An error occurred during execution of command [app-deploy] - [stage ruby application]. Stop running the command. Error: install dependencies in Gemfile failed with error Command /bin/sh -c bundle install --local failed with error Command timed out after 900 seconds. Stderr:Don't run Bundler as root. Bundler can ask for sudo if it is needed, and installing your bundle as root will break this application for all non-root users on this machine.

My gemfile:

git_source(:github) { |repo| "https://github.com/#{repo}.git" }

ruby '2.7.2'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 6.0.3', '>= 6.0.3.3'
# Use sqlite3 as the database for Active Record
gem 'pg'
# Use Puma as the app server
gem 'puma', '~> 5.0'
# Use SCSS for stylesheets
gem 'sass-rails', '>= 6'
# Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
gem 'webpacker', '~> 4.0'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.7'

gem 'sendgrid-ruby'

gem 'faker'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use Active Model has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Active Storage variant
# gem 'image_processing', '~> 1.2'

# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.4.2', require: false

gem 'will_paginate', '~> 3.1.0'
gem 'bootstrap-will_paginate', '1.0.0'

gem 'sprockets', '~> 4.0'

gem 'devise'

gem 'bootstrap'

gem 'jquery-rails'

gem 'figaro'

gem 'rails-controller-testing'

gem 'validates_zipcode'

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]

gem 'minitest'
gem 'minitest-reporters'

end

group :development do
  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
  gem 'web-console', '>= 3.3.0'
  gem 'listen', '~> 3.2'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
  gem 'spring-watcher-listen', '~> 2.0.0'
end

group :test do
  # Adds support for Capybara system testing and selenium driver
  gem 'capybara', '>= 2.15'
  gem 'selenium-webdriver'
  # Easy installation and use of web drivers to run system tests with browsers
  gem 'webdrivers'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', '>= 1.2016.7'

my .ebextension/fix_rails_6.config:

packages:
    yum:
        git: []

commands:
  02_download_nodejs:
    command: "curl --silent --location https://rpm.nodesource.com/setup_8.x | sudo bash -"
  03_install_nodejs:
    command: "yum -y install nodejs"

container_commands:
  19_precompile:
    command: "bundle exec rake assets:precompile"

And my environment properties:

BUNDLER_DEPLOYMENT_MODE true
BUNDLE_WITHOUT   test:development
RACK_ENV production
RAILS_SKIP_ASSET_COMPILATION true
RAILS_SKIP_MIGRATION false