MediaWiki:Editnotice-8-Sitenotice

<!-- NOTE: replace page content with "-" when removing notice from Wikitech -->
{{#ifeq: {{SERVERNAME}} | wikitech-static.wikimedia.org | 
<!--special banner for wikitech-static-->
You are browsing a read-only backup copy of Wikitech. The primary site can be found at [https://wikitech.wikimedia.org wikitech.wikimedia.org] |

<!--normal banner for actual wikitech-->
...
}}

Use the above template when adding a Sitenotice on the main wikitech site. Having a non-empty MediaWiki:Sitenotice will override the $wgSiteNotice that is normally displayed on https://wikitech-static.wikimedia.org/ pages.

When removing the local Sitenotice content, set the page content to - so that all the things work as expected and we don't get a weird '[dismiss]' link floating all alone in the edge of the screen.