How to serve a custom index.html using the stock nginx docker image?

How do I serve static content from the default nginx docker image? Given:

root@mordor:~# root@mordor:~# docker image ls nginxREPOSITORY          TAG                 IMAGE ID            CREATED             SIZEnginx               latest              c39a868aad02        8 days ago          133MBroot@mordor:~# 

where and how can a hello world be configured?

In the context of:

https://askubuntu.com/q/1292182/847449