Clarify guix-daemon running instructions

[dongcarl]

No description provided.

[maflcko]

Unrelated to this change, but for testing windows cross builds in docker, we use --cap-add upstream. Not sure if the --privileged could be replaced by that.

[dongcarl]

Unrelated to this change, but for testing windows cross builds in docker, we use --cap-add upstream. Not sure if the --privileged could be replaced by that.

Ah you mean so that we're granting specific capabilities instead of a blanket --privileged?

[maflcko]

Yeah, not that it matters, but if someone feels like bisecting the capabilities...

[dongcarl]

Yeah, not that it matters, but if someone feels like bisecting the capabilities...

Eh, we'll do it later when it's ready. Good to get it working first before dealing with this. I want to encourage people to run on their own distros anyway.

[fanquake]

@dongcarl @MarcoFalke I've opened #5 to track bisecting permissions, which includes my initial attempt at doing that.