changing readme to clarify fork status

README.md

@@ -1,6 +1,14 @@
-<h1>Earthly</h1>
+# EarthBuild
 
-**Please note that Earthly is no longer actively maintained.** [Read more](https://earthly.dev/blog/shutting-down-earthfiles-cloud).
+## [This is a community fork of Earthly!](https://github.com/earthly/earthly/issues/4313#issuecomment-2975691386)
+This community fork is endorsed and supported by [earthly](https://github.com/earthly).
+We're actively working on migrating things like the website and [the CI](https://github.com/EarthBuild/earthbuild/pull/1) to community versions.
+
+**Contributions welcome!**
+
+If you're interested in understanding why the community fork is happening, [this issue has a relevant discussion](https://github.com/earthly/earthly/issues/4313).
+
+---------------------------------
 
 <div align="center">
   <a href="https://earthly.dev"><img src="img/logo-banner-white-bg.png" alt="Earthly" width="700px" /></a>