Heroku

Create an app

heroku create sushi

Custom domains

heroku addon:add custom_domains

heroku domains:add example.com
heroku domains:add www.example.com

DNS records

# Root domains
mydomain.com. (A)
  => 75.101.163.44
  => 75.101.145.87
  => 174.129.212.2

# Subdomains
.mydomain.com. (CNAME)
  => proxy.heroku.com

Wildcard domains

heroku addons:add wildcard_domains

*.yourdomain.com => heroku.com