Ask HN: Starting point for web app development?

I saw this was posted on here two years ago (https://blog.cesarandreu.com/posts/a_reasonable_starting_point_for_building_a_web_app) I was wondering if anyone had a good update to this? I am a fairly seasoned wordpress web developer with plugin/api development experience. I know quite a bit of php and sysadmin randomness. I'd like to make a focused effort to trying to develop a web application, and was wondering if there was an open source project that would be a good starting place for my web app? I'm also curious if anyone has suggestions on the best way to "hold it". nodeJS, docker, etc. Thanks HN! etreymaster