[cyphar]

Not really, but note that adding your user to the docker group is precisely identical to disabling sudo's password authentication for your user (adding users to the docker group gives a free privilege escalation from that user to root).

Now, that said, the Docker client does quite a few things (such as unpacking archives) that you might not want to be done as root. Especially if the client is running on a different machine.

[ru999gol]

is there any easy way to give each user their own docker runtime? I always thought it would be very useful, this way you can give all of your users the ability to easily run all the software they want.

[cyphar]

Yes, but it'd currently require giving root access to your users. Rootless containers[1] is a project I started a while ago, and now (with some patches) you can run Docker (and Kubernetes) as an unprivileged user. There are some caveats, but I'd recommend checking it out.

[1]: https://github.com/rootless-containers

[TurningCanadian]

https://github.com/opencontainers/runc