I'm tinkering with a container tool called skopeo at present, and am building it on an Ubuntu 20.04 box.
One thing that I'd not realised, until I was looking to contribute some changes back to the project, was that there's a tool that turns Markdown ( .md ) into man pages, meaning that in-line documentation can be generated on the fly.
I found this out whilst building skopeo with the make command, which borked with: -
sed -e 's/\((skopeo.*\.md)\)//' -e 's/\[\(skopeo.*\)\]/\1/' docs/skopeo-login.1.md | /root/go/bin/go-md2man -in /dev/stdin -out docs/skopeo-login.1
/bin/sh: 1: /root/go/bin/go-md2man: not found
make: *** [Makefile:143: docs/skopeo-login.1] Error 127