Document SSH config Include usage for easier Lima instance access

- Add section explaining how to configure ~/.ssh/config with Include directive
- Show examples of direct SSH access (ssh lima-{NAME})
- Include practical usage examples (rsync)
- Document alternative Match all syntax for existing configs
- Add use cases for VSCode, Ansible, SFTP, and SSHFS
- Add note about SSHFS limitations on non-Linux platforms

Co-authored-by: AkihiroSuda <[email protected]>

Author: Copilot

website/content/en/docs/usage/_index.md

@@ -59,6 +59,43 @@ $ limactl ls --format='{{.SSHConfigFile}}' default
 $ ssh -F /Users/example/.lima/default/ssh.config lima-default
 ```
 
+#### Using SSH without the `-F` flag
+
+For easier SSH access, you can configure your `~/.ssh/config` to automatically include Lima's SSH configurations:
+
+```
+Include ~/.lima/*/ssh.config
+```
+
+Add this line to the beginning of your `~/.ssh/config` file. If you have existing `Host` entries in your SSH config, you may need to use the following format instead:
+
+```
+Match all
+Include ~/.lima/*/ssh.config
+```
+
+After adding this configuration, you can connect to Lima instances directly:
+
+```bash
+# Connect to the default instance
+ssh lima-default
+
+# Connect to a named instance
+ssh lima-ubuntu
+
+# Use SSH with other tools
+rsync -a -e ssh . lima-default:/tmp/repo
+```
+
+This SSH integration also enables Lima instances to work seamlessly with various tools:
+
+- **VSCode**: Use the Remote-SSH extension to connect to `lima-{NAME}`
+- **Ansible**: Target Lima instances using their SSH hostnames in inventory files
+- **SFTP**: Transfer files using `sftp lima-{NAME}`
+- **SSHFS**: Mount remote filesystems with `sshfs lima-{NAME}: /local/mountpoint`
+
+> **Note**: SSHFS may have limitations on non-Linux platforms like macOS and Windows.
+
 ### Shell completion
 - To enable bash completion, add `source <(limactl completion bash)` to `~/.bash_profile`.
 - To enable zsh completion, see `limactl completion zsh --help`