Before nginx was a thing, I worked with a guy who forked apache httpd and wrote this blog in C, like, literally embedded html and css inside the server, so when he made a tpyo or was adding another post he had to recompile the source code. The performance was out of this world.

:00 - :ff

Edit: Just learnt this can be also noted as:

:: - ::f

Most likely debian or debian-distroless

Why would you need multiple distros at the same time?

Not banking but transfer proxy space.