fixed puma.rb file

config/puma.rb

@@ -5,13 +5,31 @@
 # or
 # RAILS_ENV=development bundle exec puma -C ./config/puma.rb
 
+#!/usr/bin/env puma
+
+# Define variables for the application path and environment.
 application_path = Rails.root
-railsenv = ENV['RAILS_ENV'] || 'production'
+rails_env = ENV['RAILS_ENV'] || 'production'
+
+# Configure the application path, environment, and daemonization.
 directory application_path
-environment railsenv
+environment rails_env
 daemonize true
-pidfile "#{application_path}/tmp/pids/puma-#{railsenv}.pid"
-state_path "#{application_path}/tmp/pids/puma-#{railsenv}.state"
 
+# Set the location of the PID and state files.
+pidfile "#{application_path}/tmp/pids/puma-#{rails_env}.pid"
+state_path "#{application_path}/tmp/pids/puma-#{rails_env}.state"
+
+# Set the locations for standard output and error logs.
+stdout_redirect "#{application_path}/log/puma-#{rails_env}.stdout.log",
+  "#{application_path}/log/puma-#{rails_env}.stderr.log", true
+
+# Set the number of threads to use.
 threads 0, 16
-bind "unix://#{application_path}/tmp/sockets/#{railsenv}.socket"
+
+# Bind to a Unix domain socket and use nginx as a reverse proxy.
+bind "unix://#{application_path}/tmp/sockets/#{rails_env}.socket"
+bind "tcp://127.0.0.1:8080"
+
+# Allow puma to be restarted by touch command.
+restart_command 'touch tmp/restart.txt'