[lxc-users] Proper Syntax for Setting raw.idmap for a container

[Dan Miller]

I'm following the procedure for mounting a host drive inside an lxc
container as described here:
https://insights.ubuntu.com/2016/12/08/mounting-your-home-directory-in-lxd/.

In that article the author sets the raw.idmap like this:

lxc config set zesty raw.idmap 'both 1000 1000'

I want to customize the mapping for gid and uid as described in the
lxd raw.idmap documentation. Which shows a sample mapping as this:

both 1000 1000
uid 50-60 500-510
gid 10000-110000 10000-20000

I'm struggling with the syntax for actually setting this on my
container, as it doesn't seem as though the command in the article
works for multi-line configurations, and I've tried entering it all on
a single line and by using JSON, but no luck, the container gives
configuration errors and won't start.

What is the correct way to configure this property?