foo.rb

#!/usr/bin/env ruby

require "bundler/inline"

gemfile do
  source "https://rubygems.org"
  gem "net-sftp"
end

require "net/sftp"

Net::SFTP.start("172.16.20.90", "joinery-bot", password:  "<redacted>", port: 22) do |sftp|
  # upload a file or directory to the remote host
  sftp.upload! "~/projects/framebridge/glaze-joinery/foo.txt", "C:\\LPDropBox\\foo.txt"
end