How to start rails server in production mode using unicorn and config file?

Question

I add Gem \'unicorn\' to Gemfile and call rails server unicorn -e production, but I get a load error. Then I add Gem \'unicorn_rails\'

Answer 1

bundle exec unicorn -p $PORT -c ./config/unicorn.rb

works for me

I put it in the Procfile and then use Foreman to start it off by entering

foreman start