Bootdisk on LXC running docker is full; can't figure out how to expand it

[bfish2]

I have expanded the disk of the LXC to 12GB, but I cannot for the life of me find any info on how to enlarge the bootdisk. It is on a ZFS Pool. I have consulted Google Gemini 8-ways-to-Sunday, and all the answers point back to running commands (e.g. zfs) in the LXC but when I run them, I only get "command not found." Any advice? TIA!

 

[LnxBil]

I have expanded the disk of the LXC to 12GB

how did you do this?

 

[bfish2]

Using the Proxmox button for Volume Actions, then choosing Resize, from within the lxc itself.