Build on self-hosted runner

Author: Lannro

.github/workflows/build.yml

@@ -12,7 +12,7 @@ on:
 jobs:
   build:
     name: Build Image
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     # These permissions are needed to interact with GitHub's OIDC Token endpoint.
     permissions:
       id-token: write