add whenever and schedule command

Gemfile

@@ -12,6 +12,7 @@ gem 'turbolinks', '~> 5'
 gem 'jbuilder', '~> 2.7'
 gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 gem 'bootsnap', '>= 1.4.2', require: false
+gem 'whenever', require: false
 
 gem 'kaminari'
 gem 'devise'

Gemfile.lock

@@ -87,6 +87,7 @@ GEM
       xpath (~> 3.2)
     case_transform (0.2)
       activesupport
+    chronic (0.10.2)
     closure_tree (7.4.0)
       activerecord (>= 4.2.10)
       with_advisory_lock (>= 4.0.0)
@@ -416,6 +417,8 @@ GEM
     websocket-driver (0.7.3)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
+    whenever (1.0.0)
+      chronic (>= 0.6.3)
     with_advisory_lock (4.6.0)
       activerecord (>= 4.2)
     xpath (3.2.0)
@@ -480,6 +483,7 @@ DEPENDENCIES
   uk_postcode
   web-console (>= 3.3.0)
   webpacker (~> 5.0)
+  whenever
 
 RUBY VERSION
    ruby 3.0.3p157

config/schedule.rb

@@ -0,0 +1,24 @@
+# Use this file to easily define all of your cron jobs.
+#
+# It's helpful, but not entirely necessary to understand cron before proceeding.
+# http://en.wikipedia.org/wiki/Cron
+
+# Example:
+#
+# set :output, "/path/to/my/cron_log.log"
+#
+# every 2.hours do
+#   command "/usr/bin/some_great_command"
+#   runner "MyModel.some_method"
+#   rake "some:great:rake:task"
+# end
+#
+# every 4.days do
+#   runner "AnotherModel.prune_old_records"
+# end
+
+every 5.minute do
+    command "docker compose exec outpost bin/rails build_public_index "
+end
+
+# Learn more: http://github.com/javan/whenever