タイトル[Docker]権限エラー Operation not permitted @ rb

railsでDokerfileを設定しているのですが、railsが起動してくれません。
参考記事をみながら、docker start コンテナ名を実行してもコンテナが起動しない状況となっています。

Dockerfile
1FROM ruby:2.5.8
2RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
3
4RUN mkdir /aaaa
5WORKDIR /aaaa
6
7ADD Gemfile /aaaa/Gemfile
8
9
10RUN  gem update bundler && bundle install --path vendor/bundle
11CMD ["rails", "server", "-b", "0.0.0.0"]

docker
1version: '3'
2services:
3  db:
4    image: mysql:5.6
5    environment:
6      MYSQL_USER: root
7      MYSQL_ROOT_PASSWORD: password
8    ports:
9      - "4306:3306"
10
11  web:
12    build: .
13    command: bash -c "rm -f tmp/pids/server.pid && bundle exec rails s -p 3000 -b '0.0.0.0'"
14    volumes:
15      - .:/aaaa
16    environment:
17      BUNDLE_APP_CONFIG: /aaaa/vendor/bundle
18    ports:
19      - "3000:3000"
20    depends_on:
21      - db
22    privileged: true
23    tty: true
24    stdin_open: true
25volumes:
26  bundle_install:
27    driver: local

エラー内容は以下のものになります。

web_1  | Traceback (most recent call last):
web_1  |        9: from /usr/local/bundle/bin/bundle:23:in `<main>'
web_1  |        8: from /usr/local/lib/ruby/site_ruby/2.5.0/rubygems.rb:302:in `activate_bin_path'
web_1  |        7: from /usr/local/lib/ruby/site_ruby/2.5.0/rubygems.rb:272:in `find_spec_for_exe'
web_1  |        6: from /usr/local/lib/ruby/site_ruby/2.5.0/rubygems/dependency.rb:284:in `matching_specs'
web_1  |        5: from /usr/local/lib/ruby/site_ruby/2.5.0/rubygems/bundler_version_finder.rb:45:in `filter!'
web_1  |        4: from /usr/local/lib/ruby/site_ruby/2.5.0/rubygems/bundler_version_finder.rb:7:in `bundler_version'
web_1  |        3: from /usr/local/lib/ruby/site_ruby/2.5.0/rubygems/bundler_version_finder.rb:22:in `bundler_version_with_reason'
web_1  |        2: from /usr/local/lib/ruby/site_ruby/2.5.0/rubygems/bundler_version_finder.rb:68:in `lockfile_version'
web_1  |        1: from /usr/local/lib/ruby/site_ruby/2.5.0/rubygems/bundler_version_finder.rb:96:in `lockfile_contents'
web_1  | /usr/local/lib/ruby/site_ruby/2.5.0/rubygems/bundler_version_finder.rb:96:in `read': Operation not permitted @ rb_sysopen - /aaaa/Gemfile.lock (Errno::EPERM)
web_1  | aaaa_web_1 exited with code 1

Gemfileの権限か何かでしょうが原因が全く理解できない現状です。
何かご存知の方いないでしょうか？