Got it, the call printf "uid $(id -u) 0\ngid $(id -g) 0" | sudo incus config set autoripper raw.idmap - has those 0’s to route it to the root user. I made a user with a UID of 1111 and a GID of 1111 then mapped to that. printf "uid $(id -u) 1111\ngid $(id -g) 1111" | sudo incus config set autoripper raw.idmap -
I can’t find a good explanation of its syntax but pieced it together eventually from Idmaps for user namespace - Incus documentation. Still happy to hear if there’s a better/safer way to achieve file stuff.