Test on SHR (#15)

* Test on SHR

* Fix name? Maybe?

* Restore proper Bash syntax

* Simplify build

* Pin to Isaiah

* Update to checktout v4

* Bring back the caching

* Set plugin path locally

* Separate jobs, just so I can handle this

* Allow easier target switching

* Test just qemu

* Constrain HTTP ports

* Prevent resource collision for network

* Re-enable building all

* Try only vbox

lib/provider.py

@@ -9,7 +9,7 @@ class Provider:
     @property
     def runner(self) -> str:
         if self.name == "qemu":
-            return "ubuntu-latest"
+            return "isaiah"
         elif self.name.startswith("virtualbox"):
-            return "macos-12"
+            return "isaiah"
         return None