Clarify our puma.rb file is only used locally

config/puma.rb

@@ -1,47 +1,15 @@
+# ATTENTION: This file is only used to run puma on your development
+# machine. To configure puma on production environments, use the
+# `puma.rb` file in Capistrano's `shared` folder.
+
 # Puma can serve each request in a thread from an internal thread pool.
-# The `threads` method setting takes two numbers a minimum and maximum.
-# Any libraries that use thread pools should be configured to match
-# the maximum value specified for Puma. Default is set to 5 threads for minimum
-# and maximum, this matches the default thread size of Active Record.
-#
+# Default is set to 5 threads for minimum and maximum, matching the
+# default thread size of Active Record.
 threads_count = ENV.fetch("RAILS_MAX_THREADS") { 5 }.to_i
 threads threads_count, threads_count
 
-# Specifies the `port` that Puma will listen on to receive requests, default is 3000.
-#
 port        ENV.fetch("PORT") { 3000 }
-
-# Specifies the `environment` that Puma will run in.
-#
 environment ENV.fetch("RAILS_ENV") { "development" }
 
-# Specifies the number of `workers` to boot in clustered mode.
-# Workers are forked webserver processes. If using threads and workers together
-# the concurrency of the application would be max `threads` * `workers`.
-# Workers do not work on JRuby or Windows (both of which do not support
-# processes).
-#
-# workers ENV.fetch("WEB_CONCURRENCY") { 2 }
-
-# Use the `preload_app!` method when specifying a `workers` number.
-# This directive tells Puma to first boot the application and load code
-# before forking the application. This takes advantage of Copy On Write
-# process behavior so workers use less memory. If you use this option
-# you need to make sure to reconnect any threads in the `on_worker_boot`
-# block.
-#
-# preload_app!
-
-# The code in the `on_worker_boot` will be called if you are using
-# clustered mode by specifying a number of `workers`. After each worker
-# process is booted this block will be run, if you are using `preload_app!`
-# option you will want to use this block to reconnect to any threads
-# or connections that may have been created at application boot, Ruby
-# cannot share connections between processes.
-#
-# on_worker_boot do
-#   ActiveRecord::Base.establish_connection if defined?(ActiveRecord)
-# end
-
 # Allow puma to be restarted by `rails restart` command.
 plugin :tmp_restart