Allow changing the default containerd snapshotter

[PKizzle]

Description

Currently CONTAINERD_SNAPSHOTTER is set to fuse-overlayfs and this value cannot be overriden. Neither by adding CONTAINERD_SNAPSHOTTER: stargz to the env: section in ~/.lima/default/lima.yaml nor by using a provision script. Please allow changing this value or set it to stargz whenever containerd is running in rootful mode.

[PKizzle]

I found a quick (and dirty) way to change this variable. Modify both ~/.bashrc and ~/.profile inside the Ubuntu VM:

# fuse-overlayfs is the most stable snapshotter for rootless
CONTAINERD_SNAPSHOTTER="stargz"
export PATH CONTAINERD_SNAPSHOTTER
# Lima END

[AkihiroSuda]

Currently CONTAINERD_SNAPSHOTTER is set to fuse-overlayfs and this value cannot be overriden.

Lima v0.9 no longer sets this variable for new Ubuntu 21.10 instances.

[PKizzle]

I see. So for new instances the ~/.bashrc and ~/.profile files do not contain the export and hence it can be set in the env section in the lima config yaml. https://github.com/lima-vm/lima/blob/master/pkg/cidata/cidata.TEMPLATE.d/boot/20-rootless-base.sh

Is there a way for older VMs to automatically update the ~/.bashrc and ~/.profile files without having to delete everything and creating a new one?