Sinatra with a Procfile, which is all Ruby needs to go from source to a served request.
bundle install runs server-side against your Gemfile.
bundle install
bundle exec ruby app.rbThen open http://localhost:8080.
velixir deployBind $PORT on 0.0.0.0. Sinatra defaults to localhost, which the platform health check
cannot reach from outside the container, so both app.rb and the Procfile set it
explicitly.
MIT.