Running Nginx official image as non root

[meyay (Metin Y.)]

@mahasmm

Then, we’ll switch to this user and expose a port greater than 1024, as root users can only bind to ports below 1024.

This is not necessarily true, on a host with a kernel >= 4.11 and docker version >= 20.03: Non-root user able to bind to port 80; why?