% openssl genrsa -out keys/private.pem 2048
% openssl rsa -in keys/private.pem -out keys/public.pem -outform PEM -pubout
% rails db:create
% rails db:migrate
% rails db:seed
% RAILS_ENV=production bundle exec rake batch:import_initial_data
% whenever task: bundle exec whenever --clear-crontab
% RAILS_ENV=production bundle exec whenever --update-crontab --set environment='production'
% crontab -l
% rails db:migrate VERSION=0
% rails db:drop