❯ docker run -it ruby:3.3 bashroot@49041da525d4:/# ruby -v
ruby 3.3.4 (2024-07-09 revision be1089c8ec) [aarch64-linux]root@49041da525d4:/# rails
bash: rails: command not found
root@49041da525d4:/# gem install rails
Fetching rackup-2.1.0.gem
Fetching rack-3.1.7.gem
Fetching webrick-1.8.1.gem
Fetching zeitwerk-2.6.17.gem
Fetching thor-1.3.1.gem
Fetching concurrent-ruby-1.3.3.gem
Fetching tzinfo-2.0.6.gem
Fetching i18n-1.14.5.gem
Fetching connection_pool-2.4.1.gem
Fetching activesupport-7.1.3.4.gem
Fetching nokogiri-1.16.7-aarch64-linux.gem
Fetching crass-1.0.6.gem
Fetching loofah-2.22.0.gem
Fetching rails-html-sanitizer-1.6.0.gem
Fetching rails-dom-testing-2.2.0.gem
Fetching rack-test-2.1.0.gem
Fetching rack-session-2.0.0.gem
Fetching erubi-1.13.0.gem
Fetching builder-3.3.0.gem
Fetching actionview-7.1.3.4.gem
Fetching actionpack-7.1.3.4.gem
Fetching railties-7.1.3.4.gem
Fetching marcel-1.0.4.gem
Fetching activemodel-7.1.3.4.gem
Fetching activerecord-7.1.3.4.gem
Fetching globalid-1.2.1.gem
Fetching activejob-7.1.3.4.gem
Fetching activestorage-7.1.3.4.gem
Fetching actiontext-7.1.3.4.gem
Fetching mini_mime-1.1.5.gem
Fetching mail-2.8.1.gem
Fetching actionmailer-7.1.3.4.gem
Fetching rails-7.1.3.4.gem
Fetching actionmailbox-7.1.3.4.gem
Fetching websocket-extensions-0.1.5.gem
Fetching websocket-driver-0.7.6.gem
Fetching nio4r-2.7.3.gem
Fetching actioncable-7.1.3.4.gem
Successfully installed zeitwerk-2.6.17
Successfully installed thor-1.3.1
Successfully installed webrick-1.8.1
Successfully installed rack-3.1.7
Successfully installed rackup-2.1.0
Successfully installed concurrent-ruby-1.3.3
Successfully installed tzinfo-2.0.6
Successfully installed i18n-1.14.5
Successfully installed connection_pool-2.4.1
Successfully installed activesupport-7.1.3.4
Successfully installed nokogiri-1.16.7-aarch64-linux
Successfully installed crass-1.0.6
Successfully installed loofah-2.22.0
Successfully installed rails-html-sanitizer-1.6.0
Successfully installed rails-dom-testing-2.2.0
Successfully installed rack-test-2.1.0
Successfully installed rack-session-2.0.0
Successfully installed erubi-1.13.0
Successfully installed builder-3.3.0
Successfully installed actionview-7.1.3.4
Successfully installed actionpack-7.1.3.4
Successfully installed railties-7.1.3.4
Successfully installed marcel-1.0.4
Successfully installed activemodel-7.1.3.4
Successfully installed activerecord-7.1.3.4
Successfully installed globalid-1.2.1
Successfully installed activejob-7.1.3.4
Successfully installed activestorage-7.1.3.4
Successfully installed actiontext-7.1.3.4
Successfully installed mini_mime-1.1.5
Successfully installed mail-2.8.1
Successfully installed actionmailer-7.1.3.4
Successfully installed actionmailbox-7.1.3.4
Successfully installed websocket-extensions-0.1.5
Building native extensions. This could take a while...
Successfully installed websocket-driver-0.7.6
Building native extensions. This could take a while...
Successfully installed nio4r-2.7.3
Successfully installed actioncable-7.1.3.4
Successfully installed rails-7.1.3.4
38 gems installed
A new release of RubyGems is available: 3.5.11 → 3.5.16!
Run `gem update --system 3.5.16` to update your installation.
root@49041da525d4:/# rails -v
Rails 7.1.3.4root@49041da525d4:/app# bundle init
Writing new Gemfile to /app/Gemfile
root@49041da525d4:/app# cat Gemfile
# frozen_string_literal: true
source "https://rubygems.org"
gem 'rails', '7.2.0.beta3'
root@49041da525d4:/app# bundle install --path vendor/bundle
[DEPRECATED] The `--path` flag is deprecated because it relies on being remembered across bundler invocations, which bundler will no longer do in future versions. Instead please use `bundle config set path 'vendor/bundle'`, and stop using this flag
Fetching gem metadata from https://rubygems.org/...........
Resolving dependencies...
Fetching rake 13.2.1
Installing rake 13.2.1
Fetching bigdecimal 3.1.8
Fetching concurrent-ruby 1.3.3
Fetching connection_pool 2.4.1
Fetching drb 2.2.1
Fetching minitest 5.24.1
Fetching builder 3.3.0
Fetching erubi 1.13.0
Fetching racc 1.8.1
Installing bigdecimal 3.1.8 with native extensions
Installing concurrent-ruby 1.3.3
Installing connection_pool 2.4.1
Fetching crass 1.0.6
Installing drb 2.2.1
Fetching rack 3.1.7
Installing builder 3.3.0
Installing minitest 5.24.1
Installing erubi 1.13.0
Fetching useragent 0.16.10
Installing crass 1.0.6
Installing racc 1.8.1 with native extensions
Installing useragent 0.16.10
Fetching nio4r 2.7.3
Installing rack 3.1.7
Fetching websocket-extensions 0.1.5
Installing websocket-extensions 0.1.5
Fetching zeitwerk 2.6.17
Fetching marcel 1.0.4
Fetching mini_mime 1.1.5
Installing nio4r 2.7.3 with native extensions
Installing zeitwerk 2.6.17
Installing marcel 1.0.4
Installing mini_mime 1.1.5
Fetching io-console 0.7.2
Fetching webrick 1.8.1
Fetching thor 1.3.1
Installing io-console 0.7.2 with native extensions
Fetching websocket-driver 0.7.6
Installing webrick 1.8.1
Fetching i18n 1.14.5
Installing websocket-driver 0.7.6 with native extensions
Installing thor 1.3.1
Installing i18n 1.14.5
Fetching tzinfo 2.0.6
Fetching net-imap 0.4.14
Fetching net-pop 0.1.2
Installing tzinfo 2.0.6
Installing net-pop 0.1.2
Installing net-imap 0.4.14
Fetching net-smtp 0.5.0
Installing net-smtp 0.5.0
Fetching rack-session 2.0.0
Fetching rack-test 2.1.0
Fetching rdoc 6.7.0
Installing rack-session 2.0.0
Fetching rackup 2.1.0
Installing rack-test 2.1.0
Fetching mail 2.8.1
Installing rackup 2.1.0
Fetching nokogiri 1.16.7 (aarch64-linux)
Installing mail 2.8.1
Installing rdoc 6.7.0
Installing nokogiri 1.16.7 (aarch64-linux)
Fetching loofah 2.22.0
Installing loofah 2.22.0
Fetching rails-html-sanitizer 1.6.0
Installing rails-html-sanitizer 1.6.0
Fetching reline 0.5.9
Installing reline 0.5.9
Fetching irb 1.14.0
Installing irb 1.14.0
Fetching activesupport 7.2.0.beta3
Installing activesupport 7.2.0.beta3
Fetching rails-dom-testing 2.2.0
Fetching globalid 1.2.1
Fetching activemodel 7.2.0.beta3
Installing rails-dom-testing 2.2.0
Installing globalid 1.2.1
Installing activemodel 7.2.0.beta3
Fetching activejob 7.2.0.beta3
Fetching actionview 7.2.0.beta3
Installing activejob 7.2.0.beta3
Installing actionview 7.2.0.beta3
Fetching activerecord 7.2.0.beta3
Fetching actionpack 7.2.0.beta3
Installing activerecord 7.2.0.beta3
Installing actionpack 7.2.0.beta3
Fetching actioncable 7.2.0.beta3
Fetching actionmailer 7.2.0.beta3
Fetching railties 7.2.0.beta3
Installing actioncable 7.2.0.beta3
Installing actionmailer 7.2.0.beta3
Installing railties 7.2.0.beta3
Fetching activestorage 7.2.0.beta3
Installing activestorage 7.2.0.beta3
Fetching actionmailbox 7.2.0.beta3
Fetching actiontext 7.2.0.beta3
Installing actionmailbox 7.2.0.beta3
Installing actiontext 7.2.0.beta3
Fetching rails 7.2.0.beta3
Installing rails 7.2.0.beta3
Bundle complete! 1 Gemfile dependency, 59 gems now installed.
Bundled gems are installed into `./vendor/bundle`
root@49041da525d4:/app# ls ./vendor/bundle/ruby/3.3.0/gems/
actioncable-7.2.0.beta3 concurrent-ruby-1.3.3 minitest-5.24.1 rails-html-sanitizer-1.6.0
actionmailbox-7.2.0.beta3 connection_pool-2.4.1 net-imap-0.4.14 railties-7.2.0.beta3
actionmailer-7.2.0.beta3 crass-1.0.6 net-pop-0.1.2 rake-13.2.1
actionpack-7.2.0.beta3 drb-2.2.1 net-smtp-0.5.0 rdoc-6.7.0
actiontext-7.2.0.beta3 erubi-1.13.0 nio4r-2.7.3 reline-0.5.9
actionview-7.2.0.beta3 globalid-1.2.1 nokogiri-1.16.7-aarch64-linux thor-1.3.1
activejob-7.2.0.beta3 i18n-1.14.5 racc-1.8.1 tzinfo-2.0.6
activemodel-7.2.0.beta3 io-console-0.7.2 rack-3.1.7 useragent-0.16.10
activerecord-7.2.0.beta3 irb-1.14.0 rack-session-2.0.0 webrick-1.8.1
activestorage-7.2.0.beta3 loofah-2.22.0 rack-test-2.1.0 websocket-driver-0.7.6
activesupport-7.2.0.beta3 mail-2.8.1 rackup-2.1.0 websocket-extensions-0.1.5
bigdecimal-3.1.8 marcel-1.0.4 rails-7.2.0.beta3 zeitwerk-2.6.17
builder-3.3.0 mini_mime-1.1.5 rails-dom-testing-2.2.0
root@49041da525d4:/app# bundle exec rails -v
Rails 7.2.0.beta3root@49041da525d4:/app# rails new sample
create
create README.md
create Rakefile
create .ruby-version
create config.ru
create .gitignore
create .gitattributes
create Gemfile
run git init -b main from "."
... 省略 ...
root@49041da525d4:/app/sample# ls bin/
bundle docker-entrypoint importmap rails rake setup
root@49041da525d4:/app/sample# bundle exec rails -v
Rails 7.1.3.4
root@49041da525d4:/app/sample# bin/rails -v
Rails 7.1.3.4root@49041da525d4:/app/sample# bundle add rubocop
root@49041da525d4:/app/sample# bundle binstubs rubocop
root@49041da525d4:/app/sample# ls bin/
bundle importmap rake setup
docker-entrypoint rails rubocoproot@49041da525d4:/app/sample# bin/rails c
Loading development environment (Rails 7.1.3.4)
irb(main):001> Rails.env
=> "development"
root@49041da525d4:/app/sample# bin/rails runner 'puts Rails.env'
development