Rubyonrails 尽管安装并需要 pryrails gem，但 Rails 容器内出现未定义方法‘pry’错误

我在用docker compose run --service-ports --detach [SERVICE_NAME]命令初始化的容器中运行公共Ruby on rails Web应用程序停靠镜像(GitLab).

我的目标是使用binding.pry个断点在Image的源代码中调试特定的函数.为了避免初始bundle install出现问题，我使用docker exec [CONTAINER_ID] /bin/bash&amp；&amp；gem install pry-rails安装了nessesary pry-railsgem.

我得到一个undefined method错误，尽管pry-rails创业板是安装和必需的.

docker attach个实例对应的日志(log):

==> /var/log/gitlab/gitlab-rails/production.log <==
  
ActionView::Template::Error (undefined method `pry' for #<Binding:0x00007ff556ce52b8>
Did you mean?  try):

以下是已安装pry-rails的确认信息:

root@3cbe23da9b57:/# gem list | grep pry-rails
pry-rails (0.3.9)

root@3cbe23da9b57:/# gem which pry-rails
/opt/gitlab/embedded/lib/ruby/gems/3.0.0/gems/pry-rails-0.3.9/lib/pry-rails.rb

使用以下代码块，Gemfile内部需要pry-rails:

group :development, :test do
  gem 'pry-rails', '~> 0.3.9'
end

gem env输出:

RubyGems Environment:
  - RUBYGEMS VERSION: 3.4.14
  - RUBY VERSION: 3.0.6 (2023-03-30 patchlevel 216) [x86_64-linux]
  - INSTALLATION DIRECTORY: /opt/gitlab/embedded/lib/ruby/gems/3.0.0
  - USER INSTALLATION DIRECTORY: /root/.local/share/gem/ruby/3.0.0
  - RUBY EXECUTABLE: /opt/gitlab/embedded/bin/ruby
  - GIT EXECUTABLE: /opt/gitlab/embedded/bin/git
  - EXECUTABLE DIRECTORY: /opt/gitlab/embedded/bin
  - SPEC CACHE DIRECTORY: /root/.local/share/gem/specs
  - SYSTEM CONFIGURATION DIRECTORY: /opt/gitlab/embedded/etc
  - RUBYGEMS PLATFORMS:
     - ruby
     - x86_64-linux
  - GEM PATHS:
     - /opt/gitlab/embedded/lib/ruby/gems/3.0.0
     - /root/.local/share/gem/ruby/3.0.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => true
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - https://rubygems.org/
  - SHELL PATH:
     - /opt/gitlab/embedded/bin
     - /opt/gitlab/bin
     - /assets
     - /usr/local/sbin
     - /usr/local/bin
     - /usr/sbin
     - /usr/bin
     - /sbin
     - /bin