/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/ is in ruby-railties 2:4.2.6-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/application.rb
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/boot.rb
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/frontbase.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/ibm_db.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/jdbc.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/jdbcmysql.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/jdbcsqlite3.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/mysql.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/oracle.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/postgresql.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/sqlite3.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/databases/sqlserver.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/environment.rb
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/environments/
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/environments/development.rb.tt
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/environments/production.rb.tt
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/environments/test.rb.tt
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/initializers/
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/initializers/assets.rb.tt
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/initializers/backtrace_silencers.rb
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/initializers/cookies_serializer.rb
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/initializers/filter_parameter_logging.rb
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/initializers/inflections.rb
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/initializers/mime_types.rb
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/initializers/session_store.rb.tt
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/initializers/wrap_parameters.rb.tt
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/locales/
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/locales/en.yml
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/routes.rb
/usr/lib/ruby/vendor_ruby/rails/generators/rails/app/templates/config/secrets.yml