[ruby] Add Rails 7.2 and Rails 8.0 weblogs (#3471)

utils/build/docker/ruby/rails72.Dockerfile

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+FROM ghcr.io/datadog/images-rb/engines/ruby:3.3
+
+RUN apt-get update && apt-get install -y nodejs npm
+
+RUN mkdir -p /app
+WORKDIR /app
+
+COPY utils/build/docker/ruby/rails72/ .
+COPY utils/build/docker/ruby/install_ddtrace.sh binaries* /binaries/
+RUN /binaries/install_ddtrace.sh
+
+ENV DD_TRACE_HEADER_TAGS=user-agent
+ENV RAILS_ENV=production
+ENV RAILS_MASTER_KEY=9d319c57ec128e905d9e2ce5742bf2de
+RUN bundle exec rails db:create db:migrate db:seed
+
+RUN echo "#!/bin/bash\nbundle exec puma -b tcp://0.0.0.0 -p 7777 -w 1" > app.sh
+RUN chmod +x app.sh
+CMD [ "./app.sh" ]

utils/build/docker/ruby/rails72/.dockerignore

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+.envrc
+shell.nix
+vendor/bundle
+node_modules

utils/build/docker/ruby/rails72/.gitattributes

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+# See https://git-scm.com/docs/gitattributes for more about git attribute files.
+
+# Mark the database schema as having been generated.
+db/schema.rb linguist-generated
+
+# Mark any vendored files as having been vendored.
+vendor/* linguist-vendored

utils/build/docker/ruby/rails72/.gitignore

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+# See https://help.github.com/articles/ignoring-files for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile '~/.gitignore_global'
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore the default SQLite database.
+/db/*.sqlite3
+/db/*.sqlite3-*
+
+# Ignore all logfiles and tempfiles.
+/log/*
+/tmp/*
+!/log/.keep
+!/tmp/.keep
+
+# Ignore pidfiles, but keep the directory.
+/tmp/pids/*
+!/tmp/pids/
+!/tmp/pids/.keep
+
+# Ignore uploaded files in development.
+/storage/*
+!/storage/.keep
+/tmp/storage/*
+!/tmp/storage/
+!/tmp/storage/.keep
+
+/public/assets
+
+# Ignore master key for decrypting credentials and more.
+/config/master.key
+
+.envrc
+shell.nix
+/vendor/bundle

utils/build/docker/ruby/rails72/.ruby-version

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+ruby-3.3.6

utils/build/docker/ruby/rails72/Gemfile

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+source "https://rubygems.org"
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+ruby "~> 3.3.0"
+
+# Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
+gem "rails", "~> 7.2.2"
+
+# The original asset pipeline for Rails [https://github.com/rails/sprockets-rails]
+gem "sprockets-rails"
+
+# Use sqlite3 as the database for Active Record
+gem "sqlite3", "~> 1.4"
+
+# Use the Puma web server [https://github.com/puma/puma]
+gem "puma", "~> 6.0"
+
+# Use JavaScript with ESM import maps [https://github.com/rails/importmap-rails]
+gem "importmap-rails"
+
+# Hotwire's SPA-like page accelerator [https://turbo.hotwired.dev]
+gem "turbo-rails"
+
+# Hotwire's modest JavaScript framework [https://stimulus.hotwired.dev]
+gem "stimulus-rails"
+
+# Build JSON APIs with ease [https://github.com/rails/jbuilder]
+gem "jbuilder"
+
+# Talk with Kafka for propagation tests
+gem "rdkafka"
+
+# Use Redis adapter to run Action Cable in production
+# gem "redis", "~> 4.0"
+
+# Use Kredis to get higher-level data types in Redis [https://github.com/rails/kredis]
+# gem "kredis"
+
+# Use Active Model has_secure_password [https://guides.rubyonrails.org/active_model_basics.html#securepassword]
+# gem "bcrypt", "~> 3.1.7"
+
+# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
+gem "tzinfo-data", platforms: %i[ mingw mswin x64_mingw jruby ]
+
+# Reduces boot times through caching; required in config/boot.rb
+gem "bootsnap", require: false
+
+# Use Sass to process CSS
+# gem "sassc-rails"
+
+# Use Active Storage variants [https://guides.rubyonrails.org/active_storage_overview.html#transforming-images]
+# gem "image_processing", "~> 1.2"
+
+group :development, :test do
+  # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
+  gem "debug", platforms: %i[ mri mingw x64_mingw ]
+end
+
+group :development do
+  # Use console on exceptions pages [https://github.com/rails/web-console]
+  gem "web-console"
+
+  # Add speed badges [https://github.com/MiniProfiler/rack-mini-profiler]
+  # gem "rack-mini-profiler"
+
+  # Speed up commands on slow machines / big apps [https://github.com/rails/spring]
+  # gem "spring"
+end
+
+group :test do
+  # Use system testing [https://guides.rubyonrails.org/testing.html#system-testing]
+  gem "capybara"
+  gem "selenium-webdriver"
+  gem "webdrivers"
+end
+
+gem 'devise'
+
+gem 'pry'
+gem 'datadog', '~> 2.7.0', require: 'datadog/auto_instrument'