Sorry. There is no userlist lxc on Turris 1.x. Probably original idea was that there is not enough space for containers. I am going to add it. For now you can install it by hand.
Edit: Colleague just noted that real reason why we don’t have lxc user list on Turris 1.x is because of processor architecture. There is no big distribution that would officially supported this specific powerpc. So lxc makes little to none sense on Turris 1.x. Install it by hand if you want it. There will be no userlist for lxc on Turris 1.x.
Space is also reason why ghostscript isn’t compiled for Turris 1.x as it exceeds size of internal storage in the Turris 1.x.