Whenever tasks to automatically start web apps and background workers after a server reboot

gistfile1.rb

# config/deploy.rb
# Using Capistrano 3
# Set the current environment for Whenever and avoid name collisions
set :whenever_environment, -> { fetch(:stage) }
set :whenever_identifier, -> { "#{fetch(:application)}_#{fetch(:stage)}" }

# config/schedule.rb
every "@reboot" do
  # If the app is using Puma
  command "cd #{path} && bundle exec puma -e #{@environment}"
  # If the app is using Delayed Job
  command "cd #{path} && RAILS_ENV=#{@environment} bundle exec delayed_job start"
  # If the app is using Sidekiq
  command "cd #{path} && RAILS_ENV=#{@environment} bundle exec sidekiq"
end