fix: persists network user data (#211)

PR fixes #180

*Description of changes:*

Persists the `cni` user data stored in `~/.local/share/cni` and in
`~/.config/cni`

*Testing done:*

Manual testing

```
$ finch network create samtest --subnet 10.8.0.0/24
$ finch run --network=samtest --name hello public.ecr.aws/amazonlinux/amazonlinux:2 sleep 1
$ finch vm stop
$ finch vm remove
$ finch vm init
$ finch start hello
```

#### License Acceptance

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

---------

Signed-off-by: Sam Berning <[email protected]>
Signed-off-by: Hsing-Yu (David) Chen <[email protected]>
Co-authored-by: Hsing-Yu (David) Chen <[email protected]>

Author: sam-berning

finch.yaml

@@ -149,11 +149,25 @@ provision:
   script: |
     #!/bin/bash
     sudo chown $USER /mnt/lima-finch
-    mkdir -p /mnt/lima-finch/containerd
-    mkdir -p /mnt/lima-finch/nerdctl
-    mkdir -p ~/.local/share/nerdctl
+
+    # https://github.com/containerd/nerdctl/blob/cffdf87ff4d648a5344eea1406bb95ca3ad7eaa4/extras/rootless/containerd-rootless.sh#L144-L146
+    # XDG_DATA_HOME & ~/.local/share: https://github.com/containerd/nerdctl/blob/cffdf87ff4d648a5344eea1406bb95ca3ad7eaa4/extras/rootless/containerd-rootless.sh#L51
+    mkdir -p /mnt/lima-finch/containerd ~/.local/share/containerd
     sudo mount --bind /mnt/lima-finch/containerd ~/.local/share/containerd
+
+    # https://github.com/containerd/nerdctl/blob/main/docs/dir.md#dataroot
+    mkdir -p /mnt/lima-finch/nerdctl ~/.local/share/nerdctl
     sudo mount --bind /mnt/lima-finch/nerdctl ~/.local/share/nerdctl
+
+    # https://github.com/containerd/nerdctl/blob/main/docs/dir.md#netconfpath
+    mkdir -p /mnt/lima-finch/cni-config ~/.config/cni
+    sudo mount --bind /mnt/lima-finch/cni-config ~/.config/cni
+
+    # https://github.com/containerd/nerdctl/blob/cffdf87ff4d648a5344eea1406bb95ca3ad7eaa4/extras/rootless/containerd-rootless.sh#L148-L150
+    # XDG_DATA_HOME & ~/.local/share: https://github.com/containerd/nerdctl/blob/cffdf87ff4d648a5344eea1406bb95ca3ad7eaa4/extras/rootless/containerd-rootless.sh#L51
+    mkdir -p /mnt/lima-finch/cni-local ~/.local/share/cni
+    sudo mount --bind /mnt/lima-finch/cni-local ~/.local/share/cni
+
     systemctl --user restart containerd.service
 
 # Probe scripts to check readiness.