Add `/private/etc` to the default mounts on macOS

Problem Description

Docker Desktop for Mac allows paths under /private/etc to be used as bind-mount sources. Rancher Desktop does not mount /private/etc into its Lima VM by default.

On macOS, /etc is a symbolic link to /private/etc. Because /private/etc is not mounted, paths under /etc are unavailable inside the Rancher Desktop VM.

$ ls -ld /etc
lrwxr-xr-x@ 1 root  wheel  11 Aug 13 11:51 /etc@ -> private/etc

We use OpenAI Codex Enterprise inside VS Code Dev containers. Codex reads enterprise-managed configuration from /etc/codex/managed_config.toml.

https://learn.chatgpt.com/docs/enterprise/managed-configuration

This file is centrally deployed to our macOS hosts, and we need to make it available inside the dev container:

{
  "mounts": [
    "source=/private/etc/codex,target=/etc/codex,type=bind,readonly"
  ]
}

This bind mount works with Docker Desktop for Mac, but not with Rancher Desktop.

Current Workaround

Edit the following file:

~/Library/Application Support/rancher-desktop/lima/_config/override.yaml

Add:

mounts:
  - location: /private/etc/
    writable: false

Then restart Rancher Desktop.

Proposed Solution

Add /private/etc to the list of default host mounts for the Mac.

Additional Information

Related issue:

• #6070

Rancher Desktop's current default macOS mounts include /var/folders, /private/tmp, and /private/var/folders, but not /private/etc:

https://github.com/rancher-sandbox/rancher-desktop/blob/main/pkg/rancher-desktop/backend/lima.ts