Ruby on Rails installation instructions might be incorrect

[bolshakov]

Describe the bug

I'm following installation instructions with a brand new Ruby on Rails 8.0.1 project as it's described here https://flowbite.com/docs/getting-started/rails/#install-flowbite and the tailwind.config.js is not generated.

To Reproduce

Generate rails app:

rails new app-name
cd app-name

Install the official tailwindcss-rails gem:

bundle add tailwindcss-rails

Run the install command to generate a tailwind.config.js file inside the ./config directory:

rails tailwindcss:install

The command outputs:

$ rails tailwindcss:install
       apply  /Users/bolshakov/.asdf/installs/ruby/3.3.4/lib/ruby/gems/3.3.0/gems/tailwindcss-rails-4.0.0/lib/install/install_tailwindcss.rb
  Add Tailwindcss container element in application layout
      insert    app/views/layouts/application.html.erb
      insert    app/views/layouts/application.html.erb
  Build into app/assets/builds
      create    app/assets/builds
      create    app/assets/builds/.keep
      append    .gitignore
  Add default /Users/bolshakov/Projects/personal/testopp/app/assets/tailwind/application.css
      create    app/assets/tailwind/application.css
  Add default Procfile.dev
      create    Procfile.dev
  Ensure foreman is installed
         run    gem install foreman from "."
Successfully installed foreman-0.88.1
Parsing documentation for foreman-0.88.1
Done installing documentation for foreman after 0 seconds
Parsing documentation for foreman-0.88.1
Done installing documentation for foreman after 0 seconds
1 gem installed
  Add bin/dev to start foreman
       force    bin/dev
  Compile initial Tailwind build
         run    rails tailwindcss:build from "."
≈ tailwindcss v4.0.3

Done in 47ms
         run  bundle install --quiet

Expected behavior

Generates tailwind.config.js inside the ./config directory.

Actual behavior

The config file was not generated. It's impossible to follow the later instructions in the Guide since they rely on the configuration file which is missing.