feat(swap): import .md files and webp transition from myst/current

Selective import from origin/myst/current (cf9c9b34):
- Add/update 255 .md files (full MyST conversion plus webp ref updates)
- Delete 175 PNG/JPG from docs/_static/images (webp twins already present)
- Delete 5 autotest topology.png (webp twins already present)

Preserved on swap (untouched):
- All .rst files (incremental swap pattern)
- conf.py, _ext/, _include/*.txt, .gitignore
- 115 canary md-*.md files
- 7 superpowers/specs/*.md design docs
- Logos vyos-logo.png / vyos-logo-icon.png (referenced by conf.py)

🤖 Generated by [robots](https://vyos.io)

1 files changed, 36 insertions, 0 deletions

diff --git a/docs/configuration/system/updates.md b/docs/configuration/system/updates.md
new file mode 100644
index 00000000..c82d37be
--- /dev/null
+++ b/docs/configuration/system/updates.md
@@ -0,0 +1,36 @@
+# Updates
+
+VyOS supports online checking for updates
+
+## Configuration
+
+```{cfgcmd} set system update-check auto-check
+
+Configure auto-checking for new images
+```
+
+```{cfgcmd} set system update-check url \<url\>
+
+Configure a URL that contains information about images.
+```
+
+
+## Example
+
+```none
+set system update-check auto-check
+set system update-check url 'https://raw.githubusercontent.com/vyos/vyos-rolling-nightly-builds/main/version.json'
+```
+
+Check:
+
+```none
+vyos@r4:~$ show system updates
+Current version: 1.5-rolling-202312220023
+
+Update available: 1.5-rolling-202312250024
+Update URL: https://github.com/vyos/vyos-rolling-nightly-builds/releases/download/1.5-rolling-202312250024/1.5-rolling-202312250024-amd64.iso
+vyos@r4:~$
+
+vyos@r4:~$ add system image latest
+```