nginxとPumaを連携し、nginx + Puma + Rails6の開発環境を構築する手順 | Enjoy IT Life
Sinatra x Puma x Nginxで簡単軽量APIを構築する – 株式会社ルーター
what is the correct way to set up puma, rails and nginx with docker? - Stack Overflow
GitHub - equivalent/dummy-sinatra-puma-socket-docker-app: Sinatra Puma server dummy app with connection on a socket so that you can point NginX on socket to test Nginx setup