You don't have to mount the host versions - you can create container-specific ones.

See https://medium.com/@lizrice/non-privileged-containers-based-...

You can run a Docker container as a particular user.

https://docs.docker.com/engine/reference/builder/#user

You can use `setcap` to grant capabilities to the binary or the `pam_cap` module if you need to do capabilities per user.

I haven't run across the need to run most containers as root for a while now.

Yup, in the end it´s an OS process and all rules apply. I did not care too much about Dockerfile best practices in my article. Good point, should at least have used "user <!root>".