Code snippet for medium post on deploying Middleman sites via SemaphoreCI - Use env variables

config.rb

# ... more configs

activate :deploy do |deploy|
  deploy.deploy_method   = :rsync
  deploy.host            = ENV.fetch('DEPLOY_HOST')
  deploy.path            = ENV.fetch('DEPLOY_DIR')
  deploy.build_before    = true
  deploy.clean           = true
end